Experimental Muscle

The following story is intended for adults over age 18 interested in male to male sexual fantasy. If that's not you, please read no further.

The following story depicts unprotected sex. As said, it's fantasy. You are reality. Practice safer sex.

All characters in this story are fictional with no resemblance to any real persons implied.

Part One of this story was by an author unknown to me. Parts Two through Seven are my own extension of the action. LenZelig@aol.com

Experimental Muscle (M/M, college, interracial, muscle)

Part One

"...8, 9, 10!" gasped Mike, savoring the sensation of the pump in his arms. His last set finished, he put away the weights and flexed his biceps to check his progress.

"Yeah, twenty inches, finally!" Not for the first time he longed for some way to accelerate his growth to absolutely inhuman dimensions.

"Excuse me," said a large young man wearing a lab coat. "But I couldn't help overhearing you. You may be the man I've been looking for. I'm Dr. Logan Green."

"I'm Mike. What do you mean I may be the man you're looking for?" Mike looked at the dark man who looked as if he spent all his time in the gym rather than in a lab. He must have outweighed Mike by at least 40 pounds and all of it muscle. What a hot looking man, Mike thought. Mike didn't think there was anyone at the school that big, and being the muscle junky he was, he had made of point of meeting all of the big men on campus. Mike wanted to get to know this man regardless of what he was selling.

"Well, I can see that you've worked really hard to gain the size you have and from what I overheard you, wouldn't object to getting bigger--A lot bigger."

"Hell, I wouldn't be working out so hard if I didn't want to get huge," Mike replied, wondering if this man really had what he had been looking for, other than an incredibly hot body.

"I've been looking for a subject for a muscle growth experiment and it's been tough finding volunteers. No one seems to want to double their muscle mass. And that's what my experiments have produced so far." Dr. Green looked Mike straight in the eye, "I think you're up for it."

"Man, I'd do anything to get that big. Fucking anything, "Mike said, almost unable to believe his ears, his greatest wish about to come true. Hell, he'd do a lot for this huge man even without the promise of outrageous growth.

"I won't ask you to do anything you wouldn't want to do," Logan said and flexed his pecs and shoulders. Even the baggy lab coat couldn't hide Logan's massive development. Mike couldn't take his eyes off the huge doctor.

"When can we start?" Mike asked, practically trembling with excitement, wanting to begin as soon as possible. In fact, he wanted to begin right now.

"I'm all set up in the lab to start whenever you like. You look as excited as I feel about my work." Dr. Green smiled knowingly.

Mike grinned back. "Damn right. Let's go."

It was a short walk across campus from the gym to the lab where Logan Green worked. Mike hadn't even wanted to take the time to shower after his workout in his eagerness to get started with the experiment. The lab was more than he expected. Along with the usual technical equipment and computers, there was a very well equipped, very heavy-duty gym. As Mike was looking around, Logan locked the doors then went to a computer console and began typing.

"I'm going to need a blood sample and a muscle biopsy in order to produce the growth factor. It will be have to be tailored to your own cellular structure and biochemical pathways." Logan then explained that one of the limitations to the growth would be the protein and energy resources of the subject's body. Once those were used up, they have to be replaced for the growth to continue. "Fortunately, I've been able to formulate a protein fuel that the growth factor can metabolize almost immediately. The rate of growth is essentially limited only to how fast you can drink the protein."

The blood sample and biopsy took just a few moments to perform. Mike's body fat was already pretty low so that the needle didn't have to penetrate as far or as painfully to get the muscle sample as it would with someone else. The doctor injected the specimens into the largest machine in the lab and initiated his programs.

"I'm going to have to ask you to strip down to your jock. I need to take some measurements before your injection if I'm going to get accurate data for the experiment. Don't worry, this won't hurt a bit," Logan smiled, "and no one is going to walk in on us."

Mike didn't need to be asked twice. He was proud of his body and would have willingly stripped bare and more to get on with the experiment. "I've tested the procedure on myself, and even taking the smallest amount of growth factor I could measure, I was able to gain over 100 pounds of muscle." Logan took off his lab coat and rolled up his sleeves revealing his incredibly thick and vascular forearms. The doctor was huge and looked as if he could win any bodybuilding contest he wanted. Even Mr. Olympia didn't have this guy's proportions. Mike could barely control himself as he considered Logan's massive physique and what the growth factor would do to him.

Mike had never been so thoroughly measured in so many ways before. Each of his muscles was thoroughly quantified in size, shape, mass and density. Logan was full of praise and encouragement, clearly enjoying himself as he asked Mike to flex each of his muscles. When he was done, Logan read out the results of the measurements. Mike was a massive 240 pounds at 6 feet tall. His arms were actually just over 20 inches and he had a 50 inch chest, 33 inch waist and 30 inch thighs. But even Mike's huge dimensions were no match for Logan's. Having this hot, muscular man touch and praise his body was incredibly sexy. Mike's dick began pushing against the thin fabric of his jock strap.

Logan couldn't help but notice Mike's growing arousal. "Come with me and let me show you something." He walked over to a computer console and typed out some commands and a video monitor lit up. "This is me last week before I tested the growth factor."

"That's you?" said Mike, incredulously. It had taken him a moment to recognize that the naked man on the screen was indeed Logan. Even before the growth, Logan was a hot looking man with a good build and a hefty looking dick. "That's incredible. You weren't kidding about this, were you?"

"Not at all," Logan said. He hit a few more keys and a series of images flashed across the screen. "I've had to edit the images quite a bit. Some of my reactions to the process were rather x-rated." Logan looked over his massive shoulder at Mike's nearly naked body. "I think you know what I mean."

Mike's jaw dropped and his dick popped out of his jock as he watched Logan literally growing before his eyes. It looked like a cartoon, the growth was so outrageous. There were nine shots of Logan and each image was accompanied by a set of numbers describing his expanding physique. Mike watched Logan's weight surge from 180 to 270 pounds while his body fat fell to practically zero. His arms grew from 17 to 24 inches and his chest from 44 inches to an awesome 60. His quads had grown from 25 to 40 thick and cut inches and his muscular calves now flared at 23 inches. Only his waist stayed the same at 30 inches with mind boggling lats forcing his arms from his side. To Mike's disappointment, Logan's crotch was fuzzed out in all but the first picture. Even with his clothes on, Mike could see that the doctor was even bigger now.

Logan turned around revealing a massive hard-on running along his big thigh. It looked as if the growth factor worked on more than just muscle. He wrapped his hand around Mike's hard dick and said, "I get hard just thinking about the process. Hot, eh?" Mike nodded. "You still haven't seen the latest results of my growth," Logan said and began to unbutton his shirt.

Mike's dick throbbed as the massive column of Logan's neck and the slabs of hairless pectoral muscle were revealed. When Mike pulled Logan's shirttails from his pants, Logan stopped undressing to let Mike take over.

Mike finished unbuttoning Logan's shirt and let it hang open, marveling at the densely muscled six pack bulging above Logan's belt, the deep cuts between the rock hard abs were remarkable, not even when Logan took a deep breath was the definition obscured.

"Go on," said Logan. "It'll be a while yet until your injection is ready. I'm sure you can think of some ways to pass the time." He winked and flexed. "I know I can."

Mike needed no more encouragement. He wanted Logan's dick and he wanted it now. He undid Logan's belt and pushed down his pants, struggling to get them past Logan's gigantic thighs. Mike knelt down and looked up in awe at the massive man standing with his shirt open, pants around his ankles and tight white briefs that barely contained his hard dick. Mike ran his tongue along Logan's cloth covered dick, soaking the underwear. Logan groaned as he felt Mike's hot breath on his dick and pushed his crotch into Mike face, nearly knocking Mike over with the force of the passion flowing from his muscular quads. Mike grabbed hold of Logan's rock hard ass bringing his own not inconsiderable strength to bear to keep his balance and his mouth on Logan's dick.

Logan grabbed Mike's thick deltoids and rubbed his massive jockey-covered dick across Mike's face, moans of pleasure escaping from his lips. Frustrated with the fabric between him and Logan's dick, Mike took hold of the waist-band and pulled it apart, tearing the cloth away from Logan's muscle-packed groin, the effort hardening his shoulders under Logan hands. Again Mike paused, he had never seen a sexier sight. Logan's clothes in disarray enticingly hid much of his massive physique sending shivers of anticipation down Mike's spine. He took Logan's balls into his mouth and teased the head of Logan's thick 9 inch dick. His entire field of vision was filled with Logan's rippling body, his ministrations causing the bodybuilding doctor to gasp.

"Oh yeah, man," Logan groaned, digging his fingers into Mike's delts, "suck my dick!"

Mike obliged with enthusiasm, excited by his power over the huge man and deep throated Logan's cock. He ran his hands over Mike's massive chest and chiseled abs, blown away by the sheer density of the muscles. Grasping the base of Logan's dick, Mike applied powerful suction to the mushroom head causing it to expand even bigger. With a grunt, Logan clenched his abs into six massive bricks and Mike slowly traced out each incredible contour and sucked Logan's dick even harder.

Then Mike turned his attention to Logan's insanely thick quads and calves. Logan flexed his legs for Mike, bending his knees to bring out the definition of his hamstrings. Leaving off Logan's dick, Mike began running his tongue over Logan's left thigh, pressing it into the deep cuts then over the striated muscle. His fingers traced out the separation of Logan's diamond-etched calf, each hand cupping the twin heads of flaring muscle while his mouth traveled over the huge tear-drop shaped muscle bulging over Logan's knee. Then he traced the solid cord running along the inside of Logan's thigh into his groin, biting and sucking Logan's ripped muscles. Logan relaxed his quads and still the muscle barely yielded to Mike's probing tongue. Taking hold of Logan's thigh with both hands, Mike shook it back and forth the way he had seen the pro's do on stage, amazed at just how heavy the muscles were. "Flex," he whispered and Logan tensed his thigh hard with a groan. Hard veins appeared under the thin skin which Mike followed with his tongue up and down the entire length of Logan's leg.

Logan lifted Mike to his feet and pulled him into a powerful bear hug, crushing the taller man's body into his much more massive frame and kissing him passionately. He cupped Mike's ass in his hands then began massaging it hard, pulling Mike's groin into his. Then, effortlessly, Logan snapped Mike's jock into pieces, freeing Mike's dick. Without warning, he swept Mike off his feet and cradled him in his arms, his shoulders and arms stretching the fabric of his shirt, looking as if he were about burst out of it.

"Holy--!" Mike's exclamation became a moan of pleasure as Logan curled his 240 pound body as if it were a barbell, lifting Mike's cock to his mouth. Logan hefted Mike up and down, pushing Mike's dick into his mouth and then letting it slide out as he lowered his friend's body. Mike grasped Logan's arm to feel the strength and size of the muscles powering this amazing blow job. The effort of curling his massive buddy sent a rush of blood into Logan's huge biceps, pumping them up even bigger. The sensation of huge, hard muscle flexing sent Mike flying. Unable to contain the 24 inch biceps, Logan's sleeves burst at the seams. Mike tore away the cloth and began licking the hot biceps as it lengthened then contracted to a phenomenal peak as big as a softball. Grunts and moans erupted from Logan, sending even more incredible sensations down Mike's dick. Logan pumped out a few more reps bringing Mike to the edge of cumming, then set him back on his feet.

"Wow," said Mike, trying to catch his breath.

Logan pulled away the shreds of his shirt and kicked off his pants and shoes and hit an incredible double biceps pose. Then he straightened his arms out, flexing and twisting them from the shoulder displaying the corded muscles, his huge triceps hanging like horseshoes big enough for an overgrown Clydesdale. He flexed his pumped biceps again hard, making veins pop out all over his arms. "Boom!" He laughed. "Just think, pretty soon you're going to be even bigger than this," he said. Mike grabbed Logan's elbow and ran his tongue all over the flexed biceps and triceps, tracing the blood engorged veins and the textures of the striated muscle. Logan hit a Frank Zane pose with his elbows over his head and hands clasped behind his neck. Mike attacked Logan's armpits, biting the hot flesh, inhaling the musky scent, the taste of Logan's sweat as powerful an aphrodisiac as his muscles. Then he moved to Logan's bulging trapezius and neck, covering them in spit, his kissing and sucking rewarded with moans.

Logan pulled Mike's face to his in another passionate kiss, his tongue parting Mike's lips. Mike ran his hands over the expanse of Logan's chest, then traced the ridges of his abs, the slabs of muscle expanding and contracting with Logan's heavy breathing. Mike pulled Logan's dick between his big thighs and let his own rub against Logan's six-pack, sliding it up and down the deep cut between the abs. Logan pumped his dick between Mike's sweat slicked quads, then briefly broke off the kiss to say, "Flex your arms for me, Mike." Logan grasped Mike's 20 inch arms and increased his fucking motion, groaning, "Big arms, gonna make them even bigger."

"Oh, man!" said Mike, flexing his biceps as hard as he could. He couldn't believe the huge doctor was getting off on his muscles! He extended his arms to his sides like Logan had done for him, Logan's hands stroking and squeezing Mike's huge arms. The two men continued to push against one another, rhythmic thrusts of hard cock against harder muscle coming faster and faster. Torrents of sweat poured from their bodies, lubricating their action.

Mike abandoned his posing and threw his arms around Logan, lifting the 280 pound man so that Logan's chest was within reach of his questing tongue. Mike buried his face between Logan's pecs then ran his tongue from one side of the broad chest to the other, biting and sucking each erect nipple and the muscle in between. As he ran his tongue along the huge cleft between the pectorals, Logan flexed, deepening the cut between heavy slabs of beef.

Mike let Logan down and said, "I love your pecs, guy."

"They're all yours, Mike," Logan replied. A glint appeared in his eyes and he dropped to the floor and did a couple push-ups, his form flawless, his back flexing hugely. For the first time, Mike got a good look at Mike's broad back. Flex Wheeler had nothing on Logan! Mike still couldn't believe the narrowness of Logan's waist, the thickness and width of his lats, the way his traps bulged into mountains with each push up. Mike's hand wandered from the christmas tree striations of Logan's lower back onto his equally striated, perfectly shaped ass.

"Get on my back," said Logan.

Laying his dick between Logan's muscular bubble butt cheeks, Mike set his 240 pound frame on top of his gigantic friend. He pressed his chest into Logan's expansive back and stretched out. A sound halfway between a grunt and a moan rumbled in Logan's chest as he pressed up their combined weight, well over a quarter ton of muscle! Mike first grasped Logan's triceps, feeling them quiver and flex with the effort of the push up. Reaching around Logan's flaring lats, he took great handsful of the flexing mounds of pectorals, the skin drawing taut as Logan's pecs stretched at the bottom of the rep. Mike's knuckles grazed the floor and he tightened his grip as Logan pushed up, feeling the massive pecs flex bigger and bigger, threatening to burst the thin layer of skin. Mike ground his dick along Logan's ass and writhed against the flexing mountain of muscle below him.

"Work those pecs, man!" said Mike. "Huge fucking pecs!"

Logan powered out a few more reps, overwhelmed with excitement at his new strength and Mike's hard body and dick pressing into his back. Mike's enthusiasm and unabashed worship of his muscles was about to send him over the edge. He forced out one more rep then let himself fall to the floor. They lay still for several moments, both knowing that almost any motion would bring them off.

Mike sat up and straddled Logan's waist, his dick fitting snugly into the deep crevasse between the heavy ridges of muscle running along Logan's spine, and started massaging Logan's oversized traps and delts. He kneaded the huge lats that spread from Logan's wide shoulders to his narrow waist, then brought all his strength to bear on Logan's incredible traps.

Suddenly, Logan twisted between Mike's legs, sat up and pushed Mike onto his back, pinning his arms to the floor. Logan shifted his grip so that he kept both of Mike's wrists in one hand and slid down Mike's to attack Mike's sweaty arm pit. Logan nuzzled the sensitive flesh making Mike writhe with pleasure. When Mike's hips began bucking, Logan released his grip on Mike's wrists, sliding further down to take Mike's dick into his mouth.

Mike threw his legs over Logan's shoulders and lifted his hips to meet Logan's powerful suction. Logan placed a hand on the small of Mike's back lifting his ass higher, his thumb searching out and stroking Mike's ass hole. Logan locked eyes with Mike, his hand replacing his mouth on Mike's dick. He let a drop of spit fall to Mike's ass and worked his thumb into Mike's hot ass. Mike clenched his ass around Logan's thumb, moaning and forcing his hips into Logan's probing hand. Continuing to stroke Mike's dick, Logan said, "You want this muscle man to fuck you? You want 300 pounds of muscle fucking your ass?"

"Yeah, Logan, I can't take any more. Fuck me! Fuck me hard!"

With that, Logan reached his arms under Mike's back and lifted him onto the desk. He opened a drawer and pulled out some lube and poured some onto Mike's hot ass and slowly pushed one finger then two into Mike's twitching hole. Pressing their dicks together with one hand, Logan jerked them, getting them slick with lube. Mike's dick was so hard it slipped out of Logan's grip, hitting his abs with a meaty thunk.

Logan picked up a container of muscle growth fuel from the counter beside his desk and threw back what must have been a gallon. He tossed the container away, and drank down another. Then another. His skin became flushed and the veins on his body pulsed with supercharged blood. He pulled Mike's legs around his waist and aimed his dick at Mike's waiting hole.

"Man! Fuck me now!" Mike cried.

Barely under control, Logan rammed his dick into Mike's tight ass, waves of strength surging throughout his body. Mike's muscular ass gripped Logan's dick like a vice. Logan leaned over and grabbed the sides of the desk, slamming his dick into Mike's willing hole. Mike took Logan's upper arms into a tight grip, feeling the already huge muscles beginning to grow even bigger.

"Muscle, muscle, muscle," breathed Mike, his lust for Logan expanding with the doctor's growing body, inspiring an equal arousal in Logan. Logan threw his head back and let out a deafening, primeval roar, searing Mike's gut with hot cum, unable to hold back so erotic was the sensation of giving pleasure and the awesome sensation of his muscles growing larger, filling with more and more incredible mass. If anything, Logan's dick became even harder as he continued to grow and fuck his muscle buddy. Mike could barely believe his eyes. It was like being fucked by the Incredible Hulk! Logan reared back, never missing a stroke of his fucking, and hit a massive double biceps, his arms now pumped up to 25 inches and still expanding with hot, hard muscle.

"Holy shit!" yelled Mike, reaching for Logan's growing cannon-ball biceps. He cupped the surging muscles, feeling them grow and expand bigger and bigger, pushing against his hands. It was the ultimate posing display! The sensation was too much, much too much! His dick, untouched, let fly, spurt after spurt of his cum covering his face and chest.

Logan's assault on Mike's ass continued relentlessly, powered by increasingly larger and larger quads that bulged obscenely against the desk, each individual massive muscle cording his thighs standing out and growing, looking like the root system of a sequoia. Mike moaned out encouragement, his legs around Logan's waist pulling the growing giant deeper into his ass. His dick was still rock hard and he felt like he could come again and again, he was so turned on by the Logan's muscles and cock. Logan dropped his arms and hit a lat spread, the muscles growing heavier and heavier. Mike had to stretch to reach the expanding muscles as they grew wider and wider, the slabs of awesome muscle vibrating with power and mass.

Logan hit pose after mind-numbingly massive pose. He was now well over 320 pounds of freaky muscle. His shoulders had grown and grown, each as big and as hard as a bowling ball. His pecs were twin plates of eye-popping, shredded muscle, huge square mountainous slabs pushing and growing outwards. Veins like ropes covered the muscle stallion's massive frame and even when Logan relaxed between poses, his muscles stood out as rawly defined as the anatomy chart of a demi-god.

Abandoning his posing display, Logan pulled Mike to his heaving chest and easily lifted him from the desk. Mike threw his arms around Logan's unbelievably wide shoulders, stunned at the way Logan's muscles continued to grow and pulse against his body. Logan carried him across the room, Mike's ass still impaled by Logan's throbbing dick. Logan stopped with his back to a mirror and stood with his tree trunk legs planted far apart and knees bent supporting Mike with his now 45 inch quads. Mike looked over Logan's enormous trapezius into the mirror at the vast rocky terrain of Logan's back flaring from his tiny waist to his ever widening shoulders. Mike was overwhelmed with the sheer width and thickness of Logan's back. Relaxed, the muscle hung like two sides of beef beside his spine. Flexed, his back was a gut wrenching, pulsing mass of incredible contours, muscles crowding and pushing each other into fantastic prominence. Even the globes of Logan's muscular ass were thicker and ripped to the bone.

Gripping his lats securely just under his arms, Logan bounced Mike up and down on his dick, rippling the giant muscles of his arms and shoulders. Mike's dick slid up and down the huge cubes Logan's washboard stomach, butting up against the huge protruding shelf of pectorals which Logan flexed, squeezing Mike's dick between the slabs of beef and sending Mike into paroxysms of pleasure. Logan's bouncing became more frantic and powerful and he stood on his toes and flexed the now absolutely freaky 30 inch calves that swelled from his legs, the hugely gnarled muscles easily lifting both men.

The masses of ripped muscle pulsing against his skin, the sight of it flexing and rippling under paper thin skin, the sheer unreal size of the muscle man fucking him was about to send Mike over the top again, his dick was so hard he thought it would explode. "Oh man, I'm going to cum!" moaned Mike. "Flex your arm for me, muscle stud!" Mike threw one arm around Logan's muscle corded neck as the muscle man raised his mighty arm and flexed the absolutely huge, incredibly peaked, savagely dense 28 inch biceps. As soon as Mike's tongue touched the insanely huge muscle, cum exploded from his dick in a mind shattering orgasm to plaster Logan's pecs with an endless stream of white spunk. Roaring inarticulately, hips spasming, Logan let loose with one final, earth shaking thrust, ramming his dick deep into Mike's ass and shooting spurt after spurt of hot cum into Mike's gut, every muscle on his body flexing hugely.

They held still, every tiny movement taxing their overextended senses. After a while, Logan gently lifted Mike from his dick and stepped back against the mirror and slowly slid to the floor. Both men lay spent and shaking with the power of their orgasms and the power of this unprecedented fuck. With bodies plastered together with the stuff of two of Mike's orgasms, they shared a tender kiss. As their breathing slowed and quieted, they heard a beeping coming from growth factor machine.

"It's your turn, Mike," said Logan.

Part Two

Logan went over to the machine and withdrew the growth factor. "I think we'll try twice the dose I used," he said preparing a hypodermic. "I inject this into your arm. You should feel slightly warm as it takes effect."

"That was easy," said Mike, rubbing his bulging arm where the needle entered. "When does growth start?"

"Immediately," replied Logan pulling out five, gallon bottles of muscle growth fuel. "Here, drink these."

Mike grabbed the first bottle and drank. Although he was drinking as fast as possible, he didn't feel full. It was as if the fluid was going right out of his stomach and into his body. Every muscle felt tight and on fire. Mike finished the first bottle and flexed his biceps, they looked at least 22 inches and this was just the first bottle! He grabbed the second and continued drinking.

When he finished the fifth bottle, Logan announced, "Time for some measurements." As he did before, Logan thoroughly measured Mike's now even more massive frame. His chest now spread to 66 inches, arms to 28 inches and quads 38. His waist had shrunk to 31 and like Logan his body fat was almost zero, veins clearly visible under his skin, pulsing with energy, distributing fuel to his hungry muscles. When Logan touched his dick, it immediately sprang to full erection, standing straight up against his defined washboard stomach. Mike had had a nice 8 incher but now it stood proudly above his naval, 12 and a half inches.

"This is interesting," said Logan.

"You bet," said Mike stroking his prick which soon displayed a drop of precum.

"Oh yes, that too, but it seems you're now 6 feet 4 inches tall. When I tried this myself, I gained no height. Perhaps your younger age has allowed the factor to assist your natural potential. Would you like to try some more?" asked Logan pulling out some more bottles of muscle growth fuel.

"Lets go for broke," exclaimed Mike. "How many bottles do you have left?" Soon thirty eight, gallon bottles were lined up on the laboratory floor.

Mike started drinking, the tight burning feeling in his muscles returned. As he continued drinking, Logan guided him to sit on the floor. Logan then squatted over Mike's still erect dick and in one smooth motion took it to the hilt into his tight ass. Mike's feelings of muscle growth were matched by an intense sexual pleasure as Logan's muscular ass strongly massaged the full length of his stiff dick.

Mike grabbed the doctor by his widely flaring lats and began moving him up and down along his dick. "Ugh, no, not yet, keep drinking," grunted Logan between spikes of Mike's massive member. Reluctantly, Mike released him and picked up his tenth bottle of muscle fuel. As Logan settled back down on Mike's dick he came in a huge fountain of jizz. Straight up in the air it spouted, coating the hair, faces and burning delts and pecs of both studs in a layer of cum. The contractions of Logan's ass muscles brought Mike over the edge and he spurted a steady stream of juice deep into Logan's bowels. When their orgasms subsided both men stayed rock hard. Mike continued drinking.

Wow, thought Logan, that was almost too much! Perhaps I shouldn't allow Mike to drink all this muscle fuel in one batch. He looked at Mike's legs underneath his own. They were already larger than his, each muscle bulging and defined and visibly pulsing and growing before his eyes as each new bottle fed their size. And Logan's guts told him that Mike's muscles weren't the only thing growing. Mike had already consumed nineteen bottles, Logan decided that, after twenty, he would call a halt. Just then, Mike pushed his right arm under Logan's, reached across Logan's chest and grabbed his lats under the left armpit. The arm was an incredible sight, bigger than a champion bodybuilder's leg. Mike's grip tightened and, with seemingly no effort, Logan's 320 pounds were lifted in the air. Mike repeatedly hauled Logan's body up and down on his mighty shaft. Logan was stunned as sensations of a man fuck filled him, but many times more intense than anything he experienced before.

Mike thought that Logan looked smaller. He found that he could wrap one arm around Logan's chest and lift him easily along his dick while continuing to down the muscle growth fuel with his other arm. The pleasurable sensations in his penis returned with a vengeance. Another orgasm ripped through him and the load in Logan's ass was so big that the excess flooded down along his prick.

"Ugh, ugh, no, ugh, ah, aah, aaah." Logan seemed to have trouble talking as the sensations from his ass put him over the brink. He spouted another fountain of cum. "Please, ugh, Mike, ugh, slow, ugh, aaaah, aaaaah." Then another load and another and another. The doctor no longer seemed to be trying to speak. Every couple of minutes his body would be wracked by another orgasm between occasional pleasurable moans.

"Well Doc, that's the last of it," said Mike putting down the final bottle. "Doc? Doc?" asked Mike, getting no response. He looked at Logan's face. It appeared that Logan had passed out and was sleeping peacefully with a contented smile.

Mike stood up, carrying Logan easily with his arm around his chest and dick up his ass. The lab looked smaller, the ceiling was just a little above his head. He looked down and saw that Logan's feet were a good foot off the floor and the Doc's quads, he had thought so huge, looked small next to his.

He carried Logan over to a weight bench and set him face down on the padding. Time to pull out, thought Mike, it was fun Doc. As he pulled away from Logan's ass, he felt a strong tug and noticed that he was starting to lift Logan off the bench. This won't do, he thought and placed both hands on Logan's muscular glutes. With a little pressure his dick began to slide from the tight grip of the sleeping man's hole. It kept coming and coming. Twelve inches appeared and Mike knew he was not quite half way. Finally, the head of his prick appeared. It's as big as my fist, or at least as big as my fist used to be, thought Mike as he looked again at his hands that now easily covered Logan's firm ass.

With a pop his dick sprang free, again standing straight up along his body. It completely outreached his defined abs. Looking down he could see the piss hole staring back at him beside his right nipple. A drop of precum was forming!

Mike heard noises coming from the bench. "Doc are you awake? Are you OK?" he asked.

"Oh, uh, yes, yes, I'm all right. The last I remember my body was on fire with pleasure. I must have passed out. Let's see how the experiment came out," Logan said while rolling upright on the bench. "My god, you're huge. I expected success, but I had no idea! I need your measurements."

Logan retrieved the tape and his notebook and performed the measuring ritual. Mike enjoyed displaying each of his new muscles and the look of awe that he could see on Logan's face as, muttering, he wrote down the dimensions, one after the other.

Finally Logan finished and announced, "Eight feet three inches tall, 98 inch chest, 42 inch arms, 64 inch quads and just a 33 inch waist. Amazing. And, lets not forget that 25 inch dick, I can't believe I took the whole thing! I think if I hadn't been so muscularly enhanced from my first experiment, it would have split me apart. You'll have to be careful with that."

"Don't worry Doc, I will. Now, how can I thank you for what you've done for me. How would you like 600 pounds of muscle to fuck your ass?" said Mike smiling down at Logan.

Logan smiled back. Taking that for the answer, Mike reached down and grabbed Logan by his hips and lifted him up, placing his legs on his shoulders around the thick trunk of his neck . Gently he lowered Logan along his chest. Logan's dick quickly regained its size as it rubbed the grove between the steel like plates of Mike's pecs. Gripping Mike's neck with his arms and legs, bent almost double, Logan was helpless, but strongly aroused, in the unbreakable grip of his test subject.

Repositioning Logan's body effortlessly, Mike rubbed the doctor's dick around his man tits. They immediately stood out from his chest under the stimulation. Lowering Logan further, Mike positioned the doctor's hole over his dick. The first contact sent an electric spark through both men.

Logan considered asking Mike to be gentle, but, he wasn't certain he wanted it gentle and he knew that even his considerable strength would be unable to enforce such a request on the mammoth mountain of muscle Mike had become. He felt his ass hole spasming around the tip of Mike's cock. Each twitch seemed to allow Mike's dick head to penetrate just a little deeper as his ass stretched to accommodate it. With a flash of pleasure/pain the head popped in.

Then Mike was no longer supporting him. One hand was in the middle of his back, holding him upright. Mike's other hand released his grip on Mike's neck. He was sliding slowly down the long pole of Mike's dick. He felt pleasure deep inside as the head nudged past his prostate. The pleasure intensified as the shaft continued to push by and the head moved deep inside his guts. His first orgasm blasted free, coating Mike's face and pecs with his cum and mixing with the drying residue of their past loads they still hadn't cleaned off. Mike licked his lips, tasting his cum and smiled at him.

He continued to descend. He couldn't believe the feeling. On the outside, he was massaged by his passage over the endless mountains of Mike's muscular torso. While inside, Mike's dick seemed to be everywhere, rubbing his abs from within, pushing against his diaphragm and causing his entire body to shudder with each twitch of its mighty shaft.

When his head was even with Mike's pecs, Mike pressed him against these massive slabs of muscle. He proceeded to clean up the past loads of cum coating them, paying particular attention to the firm buttons of Mike's nipples. All of a sudden, he felt a throbbing deep inside, Mike threw his head back and almost crushed him against his chest. Mike's orgasm was like nothing he ever felt before. One powerful spurt, another and another. It seemed as if his entire insides were ringing like a bell under the impact . It triggered his own explosion.

He must have blacked out for a moment. He and Mike were covered in cum again. His. Time to clean it up once more. A man's work is never done.

Mike's load must have lubricated his guts. He was sliding faster now and his ass was stretching tighter and farther. Finally, he hit bottom. Mike's large, firm balls, big as a pair of oranges, nestled under his. He looked out on the expanse of Mike's chest and listened to his powerful heart beating inches from his head. The sound filled his soul and seemed to match the throbbing deep inside him from Mike's dick.

Then Mike gripped Logan's waist in his hands. Logan had thought his abs well developed but they looked puny next to Mike. His whole body was small in comparison. He looked at Mike's arms. They were bigger around than a basketball, with veins throbbing in the rhythm that was filling his body. Mike started moving him up and down along his dick. Logan tried to meet the thrusts of Mike's dick but found he had no control.

The pleasure built quickly from the rubbing of his dick across Mike's muscles and the internal massage like nothing he'd ever felt. Mike's dick exploded inside him. Then his let loose. He heard Mike bellowing. He was throbbing inside and out. He came again. And again.

Logan woke up. He was on the weight bench again. Or more accurately, on Mike who was on his back on the weight bench. Mike was sleeping, his dick was still hard and it was still inside him. That dick was incredible, like a fence post inside his guts, still pinning his torso and legs to Mike's chest and abs. Logan pushed his legs to the sides, sliding them from Mike's bulging shoulders, across his chest and off the edge of his flaring lats. They wouldn't reach the floor straddled as he was over Mike's enormous frame. He then grabbed the boulders of Mike's deltoids to try and haul himself off Mike's prick. He strained and moved forward. Another strain resulted in more movement.

Suddenly, he felt Mike's dick grow even larger inside him. Another orgasm was building. I'd better pull off now, he thought. He strained. Then he felt a movement and a single hand gripped his butt. Inexorably, he was pushed back down along that tremendous dick. All his enhanced strength was useless. Amazingly, Mike still was sleeping.

The tension built. The throbbing inside him began, then the explosion of cum, inside and out. He came and came, again and again.

He awoke lying in a pool of fresh cum through which Mike's abs poked like islands in a sea. I must have blacked out again, he thought. Mike's hand had released him. He would try to pull free before Mike recovers. Logan grabbed the mounds of Mike's shoulders and pulled. The fresh load inside his guts made the job easier, he slid up along the muscular body beneath him. Mike's dick seemed to go on forever as it retreated from his ass, but finally there was a plop as the head sprung free and hit the bottom of Mike's chest with a solid smack.

Mike stirred underneath him. "Oh, hi Doc," said Mike grabbing Logan around the waist and raising him effortlessly into the air above his chest. "You seemed to pass out after we got going strong, so I brought us over here to give you some time to recover. Are you OK?"

"Sure Mike," said Logan. "It just takes some getting used to. When I first saw my body after trying my muscle growth formula, I figured I could handle any situation. I never expected to be a sex toy for one of my subjects. It was fun, almost more pleasure than I could stand, but it's hard realizing that you have this fantastic body but are helpless with no control." But, I could get used to it, thought Logan.

"Sorry Doc," said Mike. "We'll stop if you want to. I don't want to do anything to hurt you. You gave me this great body," said Mike flexing his arms and chest while lying on the bench and holding Logan aloft. "You have a great body too. After your last drink of growth fuel you're bigger than ever and now have a cute eleven incher," Mike commented as he positioned Logan's dick above his mouth and, with a smooth controlled flex of his taut arms, swallowed him to the hilt. "Tastes good too," he said after removing the now clean dick and licking his lips.

"Say Doc," said Mike, "What do we do now? None of my clothes will fit me."

"That's OK, I'll have an alumnus who does work for basketball and football players make some special outfits. But, it looks like you'll have to stay in the lab overnight. How will we pass the time?" Logan asked as he admired the massive sea of muscles he was still suspended over.

Putting Logan on his feet on the floor, Mike said, "sounds good, Doc. I seem to have an itch way up inside me. Perhaps you can scratch it?" Mike rolled over on the bench and spread his incredible 64 inch quads to the side. His back bulged with muscles as his traps flared to their full spread on his 98 inch chest and his dick spiked over a foot past the end of the bench.

"Can I set the pace?" Logan, somewhat timidly inquired.

"We'll see," said Mike. Deep between Mike's muscular glutes Logan could see a tiny pink hole wink at him.

Part Three

Dr. Logan Green awoke with the dawn. He and Mike were stretched out on the exercise mat the pair had unrolled on the lab floor last night to use as a bed. He was cuddled in Mike's strong embrace. His head rested on the firm pillow of Mike's bulging upper arm, while Mike's other arm draped over his chest. One of Mike's legs rested atop his. Although Logan's quads measured 45 inches, Mike's, at 64, dwarfed his. And Mike was strong. Since trying his formula on himself, he had found he could beat every listed world weightlifting record. But, Mike was stronger. At least four times and possibly as much as ten times his strength.

Logan thought about their sex. Logan had started bodybuilding for the feeling of confidence his body gave him. Before Mike, he had been able to dominate all his sex partners. The muscle growth experiment, he realized, was a way to enhance that dominance. But, Mike changed that. He was irresistible and insatiable. Logan loved him, loved the way he used his body to satisfy his lust, loved the feeling of security and helplessness when he was in Mike's embrace and loved the sensations that Mike could inspire in his body. Even now, Mike's dick was up his ass. It was hard, it was always hard! Since the experiment, Logan had never seen it soft. He knew better now than to try a pull free. He thought about their sex last night, smiled and squeezed his ass muscles to wake up Mike.

Mike stirred. "Hi Doc," Mike said. "Ready for a morning massage?" Not waiting for an answer, he rolled Logan onto his stomach, straddling his butt. He leaned forward resting over Logan's broad back. Logan's back would have put any Mr. Olympia to shame, but it completely disappeared under Mike's much larger development. Logan turned his head and sought out Mike's lips. They kissed. Logan parted his lips to accept Mike's tongue which began an unequal duel with his inside his mouth.

Mike, remaining motionless for the moment on top of Logan, flexed his dick. Logan's eyes popped wide open and his mouth tried to clamp down on Mike's tongue. Mike flexed his dick again, and again. Logan gasped, released Mike's tongue and shouted, "Fuck me Mike, fuck me hard."

"You got it, Doc," replied Mike as he repositioned his hands to Logan's back and began to undulate his ass driving his prick through Logan's guts. At first Mike used short strokes, only five or six inches, but, he gradually built up the movement until he was withdrawing almost all the shaft, over twenty inches, until his bulbous dick head stroked across Logan's prostate. Then he let it glide back in until his big balls nestled on Logan's ass. After a few more strokes, he could feel his orgasm building. His balls pulled up tight to the base of his shaft and began driving his spunk through his dick. He drove in to the hilt. His pulsing prick brought Logan over the brink. Logan's guts contracted in ecstasy around Mike's dick as his, trapped under his abs, released a white flood onto the mat. Mike's grunts mixed with Logan's moans as their excitement continued for minutes.

"Doc, are you OK?" inquired Mike resuming a slow fucking stroke of Logan's ass.

"Oh, yes Mike, yes," moaned Logan. "I seem to be getting used to the intense pleasure you're giving me."

"Great, let's try round two," said Mike picking up the pace. He reached down , spread Logan's 45 inch legs to the side and moved between them to allow for maximum penetration. Logan mustered all his strength to push up against Mike's thrusts. Mike moved his hands from Logan's back to give him more freedom. Soon each power stroke ended with a meaty slap as ass impacted groin and balls smashed together. Mike reached under the doctor's body and pressed Logan's overheated dick against his firm abdominal muscles. Through that barrier Mike could feel his own dick sliding inside Logan's gut. He used Logan's dick to increase the pressure on his own. The added stimulation pushes Mike over the edge and he shoots off a giant blast of cum. The entire length of his prick is pulsing, pumping out load after load. His hand feels Logan's insides throb in sympathy with his orgasm.

Suddenly Logan lets out a giant roar, arches his back and pushes up with his arms and legs. Mike's entire 600 pounds are lifted clear of the mat. Only Mike's solidly embedded dick keeps him from being tossed off Logan's body, every muscle of which is fully flexed. Logan begins to shoot his second load of the morning. Jizz flies everywhere. Mike, startled and off balance, nevertheless continues to pump.

After a wild minute, Logan, his energy spent, settles to the mat. Mike, regaining his stance, watches Logan collapse, 18 inches of his dick sliding smoothly out of the doctor's ass as it descends. As Mike slowly resheaths his sword into its favorite scabbard, his balls expel their last few squirts. Mike sees that Logan has blacked out again.

Time for a morning shower, Mike decides. He rolls on to his back, pulling Logan's limp body on top of his. He lifts Logan up, almost all the way off his dick, turns his body around using his dick head as a pivot and then lowers Logan back down the shaft until, again fully impaled, his head rests on Mike's chest. With one arm holding Logan to his chest Mike stood and carried Logan into the lab's fully equipped bathroom.

The large shower had two heads, Mike turned them both on, adjusted the temperature for a bracing spray and stepped in carrying the doctor on his dick. The cool spray quickly revives Logan. "Good morning, Mike," he says. A puzzled look passes over his face. "Was I dreaming or haven't you already fucked me this morning?"

"No dream, Doc, we fucked - twice. We're still fucking." Mike flexes his dick inside Logan's guts.

Logan wraps his legs around Mike's slim waist and runs his arms under his lats and over his back to grip his shoulders. From this perch, he begins to move his ass up and down along Mike's shaft while rubbing his own dick over the muscles of Mike's abs. Mike's large hands grab Logan's waist and begins to assist his movement. The stimulation rapidly builds both mens' passion. Logan seeks out Mike's left tit and sucks it strongly. He feels a shudder run through Mike's body and the dick inside him begins to throb wildly. Mike's arms surround him in a crushing embrace. Mike screams in ecstasy and erupts with load after load of hot cum. It feels like a fire hose flooding his guts. In sympathy, Logan's own dick pumps its fluid between the two studs' tightly pressed bodies.

For the first time it is Mike that is staggered by the intensity of their love making. He leans his back against the shower wall, relaxes and tries to catch his breath. "Wow," Mike exclaims. Logan uses the leverage from his arms and legs to push upward along Mike's body. They share a long probing kiss as the cool spray of the shower plays across their muscles.

Breaking their kiss, Mike asks, "Well Doc, what's on tap for today? How about those clothes you mentioned last night?"

"Sure Mike. I should have something that will fit you by the end of the day. But first you'll have to pull your dick out of my ass and let my feet touch the floor."

"Sorry, I guess I forgot. It feels so warm and comfortable in there." Grabbing Logan's hips, Mike lifts him smoothly up and off his dick. It pops free and stands upright parallel to his body. The residue of uncounted loads pours from the still distended hole. Mike easily inverts Logan and buries his face between his ass, eating out his cum and soothing Logan's abused butt with his tongue.

When satisfied with his ass work, Mike turns Logan upright and sets him on the tiles of the shower floor. Logan rubs his ass, getting used to the empty feeling. Logan sees Mike's dick, still standing stiff and straight before him. He grabs it with both hands, rubbing them along the shaft, examining each vein and bump that his guts knew so well. With both hands, he pulls it away from Mike's body, surprised with the effort. With a twitch of his prick, Mike snaps it from Logan's strong grip. It leaps up and smacks loudly against his wet torso.

With the tip of Mike's prick standing up conveniently at mouth level, Logan finds it impossible to resist. Opening his mouth as wide as possible, he squeezes in the head and a few inches of shaft. His tongue washes and massages the intruder. He finds Mike's dick still tastes salty and tangy from its recent adventures.

"Mmmm, go to it, Doc. That feels great. I'll clean us up while you work." Mike reaches for the soap and begins a thorough lathering of their two bodies. Each defined muscle gets careful attention. Finally, his washing chores completed, Mike returns his attention to their sex play. His right hand shoves three fingers into Logan's ass, lifting him off the floor so he can rub Logan's prick along his much larger one. With his other hand, he presses Logan's head further onto his dick, forcing a couple more inches inside. Logan, surprised and excited by this new assault, grips Mike's shaft with both hands and redoubles his sucking.

They both feel their orgasms approaching. Logan feels Mike's dick buck in his hands followed by a flood of spunk into his mouth. He shoots as well, coating Mike's dick and torso with his load. Logan swallows as fast as he can but can't keep up with the flow. He lets Mike's dick head slide from his mouth and the last spurts cover his face in a white blanket. Mike licks his juice from Logan's face and Logan returns the favor by cleaning up Mike dick and body. They smile and Mike lifts Logan up to his mouth for a lingering after sex kiss.

When they break their mouths apart, Mike turns off the water and, still carrying Logan by his fingers in the ass, he steps from the shower. ------------------------------------------------------------------------------------------------------------

Several hours later, Dr. Green returns to his lab with Mike's special size clothes. He had told Mike to try his strength on his gym. He opens the door, steps in, and locks it behind him.

Mike is on the weight bench. He had moved it over to the squat rack on which almost every weight in the lab had been stacked, over 2000 pounds. Mike is pressing the weight overhead with one huge arm. Logan walks over to the bench and greets Mike, "Hi, did you have a good day?"

Mike latches the weight and smiles. He grabs Logan and pulls him on top of him. Logan drops the package of clothes to the floor. Hugging Logan to his body Mike says, "We both missed you."

"Both?" asked Logan.

"Sure I and..." He smiles and flexes his dick which bucks between their bodies. Mike rolls Logan to the floor, climbs on top and begins to strip off his clothes.

Logan relaxes and prepares to enjoy another fun evening.

Part Four

Mike rests, recovering from his latest orgasm. He hugs Logan, who sitting on his lap, covered in cum and sweat, is sleeping soundly after an exhausting evening of sex. I'd better get back to the dorm, he thinks. I can't miss another day of class. He lays Logan out on the exercise mat and withdraws his dick from his ass. Logan continues sleeping soundly.

After grabbing a quick shower, Mike examines the clothes Logan brought him. The jock strap restrained his balls but wasn't much help with his dick which had remained rock hard and vertical for over a day. Mike suspected he was destined to be the Energizer Bunny of sex who just keeps going and going and going. The jogging shorts were a good fit, flexible enough to stretch over his quads and elastic enough to snap around his small waist. Well, why shouldn't they fit, thought Mike, he had all my measurements. Finally, he pulled out a thin white lycra tee shirt. It looked like it was painted on his body, each muscle defined and visible under the tight, thin fabric. Unfortunately, his prick was also clearly outlined, standing straight up the mid line of his torso, the head just a couple of inches below the low cut neck opening. A pair of basketball shoes, a few pair of socks and a warm-up suit remained in the bag. A receipt indicated that several set of more conventional garb would be ready in a few days.

He dons the shoes and puts the warm-up suit back in the gym bag. He didn't spend years weightlifting and agree to Dr. Green's experiment to hide his body. If people stare at him, that's the idea.

Mike writes a note for Logan, giving him his dorm room number and promising to stop back on the weekend to follow-up the experiment and other matters. He leaves the lab and heads out across campus. It's almost midnight.

The paths were nearly deserted, but, the reactions from those people he did meet fulfilled Mike's expectations. Most were open mouthed awe, but, a few added a component of lust. However, nobody seemed willing to approach Mike spontaneously, perhaps fearful of where such an encounter would lead. Mike did little other than note the effect his body was having. His attention was devoted on what he would say to his roommates.

Both his roommates were hot guys, but they weren't gay. They knew Mike was, but were cool about it. Both, Mike suspected, were secretly pleased that Mike found them attractive. It gave them confidence that the girls they dated also desired their bodies, an assumption that usually proved correct. Mike thought that his fantastic physique had added a new element to the relationship. He decided that he would explain about the experiment but let his roommates decide how things develop. He tried to gauge their reactions.

One of his roommates, Earl Brown, was a varsity football player, a cornerback who was second string All American last year as a freshman. Six foot four inches and, like Mike used to be, 240 pounds. His greater height for the weight gave him a muscular proportioned body vice the more massive bodybuilder look Mike displayed. This black Adonis was proud of his twelve inch tool which he often arranged to "accidentally" display for Mike's enjoyment. However, he made no sexual move and delighted in bringing around every new girlfriend for Mike to meet.

Mike's other roommate, Don Nguyen, was born in the states of Vietnamese parents. He had a different first name in Vietnamese, that sounded somewhat like Don which is what everyone calls him. He was into gymnastics, but in high school, growth fed by an American diet caused him to shoot up to six foot, 198 pounds. Too big for gymnastics, he became a pole vaulter but he still looks like a gymnast and he retains the grace and flexibility of his earlier sport. Normally endowed, he appeared somewhat envious of Earl and he. Don is a Buddhist and he often explained that Buddhism has none of the sexual hang-ups of Western religion. However, Don faces tremendous pressure from his family; good grades in school, marriage and grandchildren are his duty.

Now at his dorm room door, Mike knows that, come what may, it's time to confront his roommates with the new Mike. The door is unlocked, which means that at least one is in. He enters. The study / living area is dark and empty. The only light provided by the computer screen savers on the three desks along the right wall. His roomies must have turned in. Perhaps, if I'm quiet, I can put this scene off until morning, he thinks. He strips and quietly enters the dark bedroom.

The three beds are twin size, rather than single, because this dorm is used mostly by the school's athletes . Mike's bed is the middle of the three and he realizes that, in his condition, it's hopelessly small. He's resigned to make the best of it and eases down on the mattress. The bed groans in protest at his 600 plus pounds. Mike had forgotten about his increased weight, it's a wonder the bed didn't collapse.

The noise brings a question in the darkness. "Mike is that you?" It's Don's voice. "We've been worried about you. What happened?"

"It's a long story," replies Mike. "For now, let's get some sleep and I'll go over it in the morning."

"I bet he had a hot date or something," pipes in Earl while turning on the light by his bed. The illumination reveals Mike, nude, on his back and overflowing his bed at the footboard and both sides. For thirty seconds there is barely a sound as the boys inspect the incredible sight before them. Earl breaks the silence saying, "Mike, you've got to tell us what happened."

Mike sits up in bed and tells his story leaving out the more personal aspects of his relationship with Logan. As he does, he sees that, while his roommates express awe over his muscles, more and more their gazes concentrate on his manhood. Earl even asks to feel Mike's arm. When Mike throws a double biceps pose while seated on the bed, Earl boldly steps between his legs to run his hands around the 42 inch arms, to feel Mike's 64 inch quads and, inadvertently, to brush Mike's dick with his shoulder. When he finishes his inspection, it's obvious that his own 12 inch dick is looking for a way out of his briefs. Don is harder to read but Mike catches him several times adjusting the gym shorts he wears to bed.

Mike is uncertain where things are heading, but, he decides that his friendship with his roommates is too important to take chances, so his says, "look it's late and we all have classes tomorrow, let's get some sleep."

"Mike, you can't sleep like that," objects Don. "You're too big for your bed. If we push the three beds together you could stretch out on the diagonal and there would still be room for us in the other corners."

"Good idea," seconds Earl and in no time both men have rearranged the beds. It appears to work, the three together give Mike enough room a allow him to spread his weight and there's plenty of room for the others without too much squeezing. But Mike believes that these new sleeping arrangements are another step in their relationship, but before he can consider all the implications, exhaustion overtakes him and he falls asleep.

"...you'll wake him," Mike hears Don whisper.

"Not if we're careful," is Earl's whispered reply. Mike is not sure what's happening. Something caused him to wake up. He decides to pretend sleep and await developments. He feels a light touch on his penis. He suspects it's Earl. After a few minutes Earl becomes bolder and begins stroking. "See, it's OK," says Earl. Shortly, another hand joins in exploring his back muscles. That would be Don he thinks. Don moves slowly down to Mike's ass, rubbing the firm glutes and gently probing the space between them.

The lack of response from Mike urges them on. Earl's tongue takes a tentative lick at Mike's dick head while Don finds his target and gently inserts a finger tip inside. When Earl locks his lips around Mike's dick head and Don has a finger firmly plugging his hole, Mike decides it's time to end his charade. With one hand he clamps Earl's head in position while flexing his glutes to trap Don's hand. With his other hand he turns on a light.

Earl's face shows surprise and fear as best it can with his mouth clamped around the huge head of Mike's dick. Using a fraction of his strength, Mike forces him to inhale a couple more inches. Earl had stripped off his briefs sometime earlier so Mike can see that, no matter what his face shows, his prick is in full lust. Don puts up a brief struggle trying to withdraw his hand but soon realizes its futility.

"Guys, I've always been honest with you," scolds Mike. "If you want sex, just ask. You don't have to rape me in the night." Mike frees the captives.

Don keeps his hand in place but Earl withdraws from Mike's dick and confesses. "I suppose I've always been attracted to you; you're one hot guy. But tonight, to be lying inches from a superman, we couldn't sleep until we saw what you're capable of."

"Well you seemed to have a taste for my dick, Earl, so why don't you finish your meal." Earl doesn't need a second invitation. With the need for caution over, he boldly grabs Mike's shaft with both hands and pushes his mouth down on the head. Suck, push and suck, he manages to get about 8 inches into his face. His hands have plenty to work with stimulating the other 17 inches and massaging Mike's large balls. Mike encourages him. "Doing great, Earl. Pretty good for your first time. Your girl friends must have had great technique. Keep going."

Meanwhile, Don was getting into uncharted territory with his ass hole explorations. A second finger, then a third snake into Mike. Mike's gut are contracting rhythmically against the intrusion. But, Don can't yet reach his goal, Mike's prostate. Since Mike seems to be enjoying their efforts Don decides to press on. Squeezing his fingers together, he inserts all five and pushes in up to his wrist. He finds his target and begins to rub. The tremor that runs through Mike's body tells him he's hit paydirt.

Attacked from front and behind, Mike starts to lose control. He moves his arm around Earl's back and waist and pulls him tight against his body, sliding Earl's long prick between his thighs and using his body to add to his stimulation. "You guys are great. Harder, deeper, faster," Mike orders. Dutifully, Earl manages another inch while Don pushing with his full strength slides into Mike's ass up to his elbow.

Mike rolls over pushing Earl onto his back underneath him. Don embedded in Mike's ass is pulled over onto Mike's back. Still holding Earl to his body with one arm, he begins one arm pushups. At the top of each rep, he pauses to lower Earl's hips allowing his 12 inches to slide between the tight friction of the muscles of his inner thighs. "I'm...going...to...cum," he warns as he lowers himself over Earl and hugs him strongly with both arms.

Earl tries to withdraw Mike's prick from his mouth but, the shaft is unyielding and with Mike's embrace he is held almost motionless. As Mike lowers his body over his, he is pressed into the mattress, his dick sliding again between Mike's thighs adding stimulation as all his senses are dominated by impressions of Mike. The shaft in his hands begins to throb, followed quickly by the first blast of cum. It floods his mouth. Earl swallows again and again but can't keep up. The excess pours past his lips and coats his face and neck. The stimulation of Mike's passion brings Earl over the top and he shoots his load through Mike's legs, splashing Don, still locked in Mike's butt, with white rain.

Mike rests on top of Earl still hugging him to his body. Then he rolls to his side, releasing Earl and rolling Don off his back. Don, after a final pat of Mike's prostate, withdraws his arm from Mike's ass. Over Mike's reclining body, looks at Earl, dazed from the experience, lying on his back, the end of Mike's dick still plugged tightly in his mouth with half his face and neck covered in the cum that forced past the seal of his lips. He withdraws the head surprising Don with the length he had managed to accept. Giving it a last kiss, he releases the shaft which snaps back against Mike's torso. Mike moves to Earl and licks his load off his face and pushing his tongue into Earl's mouth feeds him what he spilled.

Shifting his attention to Don, Mike rolls onto his back and pull Don on top off him. While he casually rubs Don's body along his dick, he asks, "Don, how did you learn how to simulate a man's ass? Do you want to fuck me?"

"I'd love to fuck you but I don't think I'm big enough to reach deep enough with my prick," replies Don. "But, if you give me a minute I'll answer your first question."

Mike allows Don to slide off his body. He stretches out on his back and flips his legs over his head, planting his knees beside his head. Don then reaches up with his hands, grabs both butt cheeks and, with his gymnast flexibility, pushes his ass down until the head of his dick enters his mouth. While sucking furiously, he positions his hand at his ass hole and smoothly slides it in up to the wrist. Mike and Earl stare in amazement at this unexpected sexual display.

Pausing in his show, Don removes his dick from his mouth and asks, "I really need something bigger in my ass. Mike, will you fuck me?"

"Well, OK. If you can take your hand you might be able to handle me. But, we'll take it slow and you let me know if I'm starting to hurt you. Earl, will you get the bottle of lube in my desk?" While Earl goes on the errand, Mike grasps Don by the waist and positions him so that he is bent double with his legs and chest pressed against Mike's body.

Earl returns, Don removes his hand to allow him to pour a generous amount of oil into his ass. As Earl shifts to lubricate Mike's shaft, Don pushes back in to ensure that his guts are well coated as far as he can reach.

Mike grips Don's waist with both hands and positions his dick at the entrance. Don removes most of his hand and, still spreading his hole with his fingers guides Mike to the target. With a shove Mike impales Don on his spear. As Don feels his ass being stretched as never before, he positions his hand at the junction between their bodies and smiles broadly as he feels inch after inch slide in. "Deeper...deeper...deeper," he encourages Mike. Mike starts to slide his dick in and out of Don's hole, trying to get a little more in each time.

After about fifteen minutes he has worked almost 10 inches up Don, who is moaning and squirming in pleasure with each stroke. His 6 inches are pointed down Mike's body sliding in the space between Mike's shaft and abs. He shoots a load laying streaks of cum on Mike's six pack all the way down to his pubes.

With Don pulsing around his shaft, Mike pushes a couple more inches in and then unloads his balls into Don's guts. Don stunned and stimulated by the force of the explosion within him shoots a second load and rests his head on Mike's powerful shoulder.

When Mike moves to withdraw, Don objects. "Don't stop Mike, that was great. You're only in half way. Let's keep going."

Earl, watching this scene pipes up, "hey guys, can I get in on this?"

Mike, enjoying his position as the sexual center for his hot roommates, agrees. "Great. Don I'll give you what you want, just tell me if it starts to hurt. Earl, while I'm fucking Don, why don't you plug me?"

While Mike resumes stroking Don along his dick, getting more penetration on each cycle, Earl rubs his tool to its full 12 inches and lubes it up. Now, how to obtain access to Mike's hole? He rubs Mike's thighs and Mike responds by spreading his legs to allow Earl between them. Each of Mike's thighs, massive trunks of defined muscle, 64 inches around, is thicker than his entire body. Mike helps him out by raising his legs high into the air allowing Earl to push up against them and reach his goal. Earl grabs Mike's legs, getting only about half way around them, and pushes his dick into Mike's ass.

With all his weight and Mike's help, he bends Mike almost double, until the tops of Mike's thighs press onto Don's body which Mike is still stroking along his dick. With Mike's ass in position Earl shoves in as far as possible and then he starts to pump, massaging Mike's ass with his hard shaft. Earl wishes he were bigger and stronger so he could really fuck Mike hard.

Just then the bedroom door opens and Earl sees standing there the biggest bodybuilder, besides Mike, he's ever seen. The man is wearing tight fitting jeans and a tee shirt that outlines all his massive development. A large tube of flesh is rapidly stiffening along his leg as he observes the scene before him.

Mike greets him. "Hi, Doc. What brings you here? Guys, this is the Dr. Logan Green I was telling you about. Doc, these are my roommates, Don," slapping Don's ass with a loud smack, "and Earl."

"Uh, hello," mumbles Logan, unsure of the proper protocol for introductions in this situation. "Look, Mike, you left without talking to me. This is a new medical procedure and I need to be able to observe the effects as closely as possible. I was thinking you could move into my house near campus where I have the proper testing equipment and can set up facilities appropriate to your new size."

"So you missed me, eh, Doc. Well I'm a bit busy now, we'll talk a little later. Why don't you join us. I think Earl could use some help."

Logan nods in agreement and quickly strips. He lubes his now fully erect dick and positions himself behind Earl pushing the head of his shaft against Earl's ass. Logan reaches around Earl's chest and grabs Mike's thick thighs. With one mighty shove he pushes all stiff eleven inches inside bringing a cry of pain and then moans of pleasure from Earl. With his great strength compressing Earl against Mike's legs, he begins to pump Earl's hole.

On the down stroke Earl is shoved to his balls into Mike, while on the up stroke Earl withdraws until Logan smacks against him as he begins another cycle. Earl being pleasured from the front and back imagines that this is what fucking would be like if he had super strength.

Looking between Mike's legs Earl has a front seat to the assault on Don's hole. He can't believe Mike can push more inside, the fit is so tight. But, each cycle seems to go a little deeper and Don just encourages Mike to push harder. Mike doesn't need much encouragement as the power fuck he is getting from Earl courtesy of Logan is starting to effect him. Sliding Don faster and pushing harder, he moves steadily deeper into his cute roomie. Finally, his balls, tightly drawn to the base of his shaft, touch Don's ass. Mike is fully embedded and the stimulation from Don's ass and Earl's dick bring on a mighty orgasm. He pushes Don hard onto his shaft as it throbs and unloads deep within Don's guts.

Don's entire body shakes from the force released by Mike dick. Excited from the stimulation Don releases his third load over Mike's torso.

Meanwhile, Mike's ass muscles contract around Earl's dick, holding him buried balls deep in his hole as his guts massage the shaft in sympathy with the pulsing of his prick. Logan pistons Earl a few more time and floods his body with his own hot seed. The effect of this stimulation is enough to push Earl over the edge and he unloads into Mike.

The bedroom is hot with the energy released by the love play of these muscular men. They ease off their exertions as their orgasms subside. Earl would have collapsed if he were not supported between Mike's legs and Logan's chest. Logan pulls Earl back and out of Mike's ass, holding him with one huge bulging arm around his chest and his dick still up his ass. Earl turns his head and kisses the man responsible for his pleasure.

Don looks up from Mike's chest and smiles. Mike smiles back and places his hands around Don's waist to pull him off his still stiff dick. Mike pulls. "Ow, stop, that hurts," shouts Don. Mike repositions his hands to Don's ass and while massaging the hole around where his dick entered. He tries again. "No, stop, no," pleads Don, "I think I'm stuck."

"Hey Doc," Mike asks, "Can you help us?"

Logan pulls out of Earl and climbs on the bed next to Mike and Don. He inspects Don's distended hole where it clutches Mike's thick pole, probing with his finger a few inches. "This doesn't look too bad," he states. Earl, get that bottle of lube." Earl hands Logan the bottle and he pours some around the shaft and works as much as he can inside. "Try again Mike," he requests while holding the shaft where it enters Don.

Mike pulls on Don's hips but another cry of pain stops him. "Doc, it feels like it's sticking about three fourths of the way up."

Logan reaches between Mike and Don and feels Don's abs. Pressing upward, he can trace the path of Mike through Don's guts. "It feels like you are snaked up into him. I don't know how you managed it but you're wedged in tight." Logan removes his hand and licks off Don's cum he picked off Mike's torso. "We either need to get you to a hospital or we could try my muscle growth formula."

Don lifts his head off Mike's pecs and asks, "What do you mean? How would your formula help?"

"Well, if I make you more muscular and, possibly bigger like Mike, there should be more room for Mike's dick and you would be better able to resist the strain from its movement inside you. I brought some equipment to sample Mike's muscles and I could get your tissue type instead. It won't take long to prepare the formula but I need to make a new batch of muscle growth fuel as well. It'll take about four hours."

"OK, I'll try it," agrees Don.

"Hey Doc, I'd like it too," says Earl. "I don't want to be the runt in the room."

"All right, I can take you both. With what I learned from Mike I think I can fine tune the type of body you end up with. So, how tall, how much muscularity increase do you want and how big a dick would you like? Don, since you're stuck now, we should go to seven feet and about fifty percent more muscle which should give you about eight times your present strength. Now how big a dick do you want?"

"I've learned to appreciate size in a man and want something big enough to pleasure Mike and Earl. How does fifteen inches sound?"

"Sounds fine with me Don," says Mike reaching in and stroking Don up to his full current limit of six inches.

"Well seven feet is fine with me, but, I'd like to double my muscle mass," says Earl. "And I see three hot guys here where I could bury twenty inches of dick."

"Ok, I've left my gear in the next room. I'll be right back," says Logan as he goes through the connecting door to the next room. In seconds he returns carrying a small pouch with medical instruments. He quickly gets samples from Don and Earl.

"It will take a few hours to make the treatments and whip up a new batch of muscle growth fuel; Mike drained my supply," Logan stated as he donned his clothes.

"Wait, I'll help you," volunteered Earl as he grabbed his sweat pants.

Finishing dressing, Logan reassured the boys, "Don't worry, we'll be back around dawn," as Earl and he left the room.

Part Five

It is just starting to get light as Logan and Earl reenter the dorm. Earl is carrying three, five gallon containers of the muscle growth fuel on one massive arm. His seven foot, 420 pound frame is evidence that he's already had his treatment. His sweat pants strain to contain his massive thighs and come only to mid calf now. Down the inside of his left leg the clear outline of his cock is visible, 14 inches soft and as big around as a normal man's wrist.

As they enter the bedroom they spot Don sleeping peacefully on Mike's huge body. Don's mouth is reflexively sucking on the tit of Mike's right pec, while Mike's left arm, almost as thick as Don's entire torso lays over his back with the hand cradling Don's head. Don's dick is hard and dried streaks of cum along Mike's thighs testify that they hadn't spent all night sleeping. Mike's pole is, of course, still hard and impaled balls deep into Don's ass. A thin white stream leaking past the seal and coating Don's dick and Mike's pubic hair is evidence of the loads of cum deposited within during the night.

Earl reaches down and squeezes Don's dick against Mike's much larger one. "Time to wake up sleepy heads, " he says. The boys stir.

Don takes a last lick of Mike's tit and sighs. "Morning already? Do you have the stuff?"

"We've got it," states Logan. "Mike sit upright so Don can drink."

Mike rolls up on the edge of the bed, his weight almost bending the frame to the floor. He holds Don against his chest with one arm as Don wraps his legs around Mike's thin waist. Don is sitting on Mike's quads, each 64 inches around, his almost two hundred pounds not even making an impression in the marble like muscle. Don reaches down and repositions his hard 6 inches so it nestles between Mike's abs and his. He could feel Mike's thick shaft as it threads through his intestines pressing against his manhood from the inside.

Now sitting up, Don notices Earl for the first time and exclaims, "Wow, you look great! Strip and let us see your muscles." As Earl moves to comply, he continues, "Dr. Green, I'm ready. How long will it take?"

"After I give you this injection, it's only a matter of how quickly you can drink the growth fuel we brought," says Logan as he sticks the needle in Don's arm. "Here's the first container." Logan helps position the heavy five gallon flask at Don's mouth as he begins to drink.

The liquid seems to pour down Don's throat and into his muscles. They inflate visibly, seeming to pulse with a red glow as they grow. By the end of the first bottle, Don is visibly taller and more muscular. "I can feel it working," he shouts as Logan switches bottles.

"So can I," adds Mike who is struggling to retain control as his embedded prick is massaged along its entire length by the throbbing muscles in Don's gut.

The second bottle follows, then the third. Suddenly, Mike lets out a scream of pure passion and hugs Don to his body with tremendous strength. He would have been crushed if he had not already added over a hundred pounds of rock solid muscle. Mike begins to unload in Don's guts. The trickle of cum from Don's ass becomes a flood. Mike rolls Don onto his back as the third, now empty, growth fuel container goes flying. Don, even though he is now almost seven feet and over 300 pounds of defined muscle, disappears under Mike's flaring 98 inch chest. Mike begins to stroke his dick through Don's ass. No small strokes either, but 20 inch pile driver ass pounding strokes. Each one finishes with a thud as Mike's body slams into Don.

Logan and Earl think Don will be killed by Mike's unchecked lust. They grab his body to pull him off but, both men together are no match for Mike's berserk strength. Thrashing around on the bed both men hear Don scream with each inward thrust. The tortured bed frames finally give way, dropping the mattresses and the men to the floor. Nobody notices.

The first spurt of cum catches them by surprise as it flies out from beneath Mike's body and splatters against the wall, ten feet away. The next hits Mike's left bicep, coating it in white. Shot follows shot in all directions like there were an out of control fire hose underneath Mike's pistoning form.

Five minutes pass before the flow diminishes and Mike regains control. All the men, even the entire room are splattered with the residue of the incredible orgasm. Mike relaxes and rolls onto his back bringing Don around to rest above him. "That was great! Earl could you fuck me too?" asks Don obviously excited but uninjured from recent events.

"Well, Ok," says Earl uncertainly. "As soon as Mike pulls out and you feel up to it."

"Not after Mike, now," insists Don. "Just shove in alongside. After my treatment, I can handle anything."

After looking to Logan, who nods Ok, Earl steps up on the now collapsed bed, straddling Mike and Don. A few strokes brings his staff to full glory, 20 inches of solid flesh. Mike was still at least three fourths of the way into Don, over 18 inches, and there didn't seen to be anyway to add his own thick member into Don's straining hole. But, he positioned his head at the point where Mike penetrated and started to shove. The tip seemed to squeeze a little between Don's ass lips and Mike's shaft. He strained. Then Mike reached up and grabbed his pole. He didn't know how much force Mike was using but more and more of him was fed into Don's ass. The feeling of Don's gut on one side and Mike on the other was fantastic. Don was into it too if his moans of delight were any indication. With just a few inches to go, Mike shifted his hands to Earl's butt and shoved him in to the hilt. Earl got a special thrill as his dick head slid past Mike's and a couple of inches into the wide open spaces beyond. Then Mike pushed in to the max, his flaring mushroom sliding along Earl's shaft and well beyond its reach.

"Doc, no need for you to be out in the cold," adds Mike fingering Earl's ass hole. In a few seconds Logan shoves in balls deep in one smooth stroke adding his contribution to over 1700 pounds of writhing muscle. Mike takes control. With his hands on Earl's hips he forces his dick through Don's guts, now in phase with his own strokes, now out of phase. Logan is carried along moving in and out of Earl's ass.

The effect on Don is immediate. His guts are invaded by two tremendous dicks each moving and throbbing. It feels as if everything inside is being stirred, massaged and pounded. His own dick, now a very respectable 15 inches, is pinned between his body and Mike's rock hard abs. As Mike's and Earl's dicks slide through his gut, he can feel them rub his own shaft from behind. Another orgasm quickly builds. He shoots again and again. With his dick trapped there is no wild spurting this time, just a sheet of white that lubricates the movement of muscle on muscle.

As Don spasms in orgasm, it brings Mike and Earl off. Earl can feel Don squeezing his shaft and the pulsing flow of sperm up Mike's shaft, it seems to pump his out in sympathy. Each load is soon matched by a squirt of cum past the seal of Don's ass hole as he is filled to capacity and beyond. Then Logan adds his contribution, spreading warmth through Earl's body.

Mike shifts his grip from Earl's hips to Don's. He smoothly slides Don off the twin poles that had penetrated him. As Don slides from beneath him, Earl splats wetly on Mike's cum soaked torso, his dick and Mike's still side by side between them, still spurting load after load against the bottom of their now tightly pressed pecs.

Mike spins Don around in the air as if he weighed nothing and sets his ass on his face so he can eat out the cum now pouring from his distended hole. Earl looks stunned by the rapid pace of their sex play and his continuing orgasm. A splash of cum on his face from Don's dick, now just inches away, brings him back to reality. A quick shove allows him to slide forward over Mike's body and inhale about 10 inches of Don's long, thin member. It quickly fills his mouth with salty essence. Earl swallows again and again. Sensations from his dick, ass and mouth overwhelms his consciousness.

Part Six

Earl awakens and opens his eyes. His head is resting in Don's lap. His eyes look out at Don's golden, lightly tan skin, now paper thin as it covers his defined, bulging abdominals. His nose is buried in the silky black pubic hair and he inhales the strong aroma of man, sweat and cum. Don's now mostly soft member is still resting in his mouth. He licks it lightly, tasting the remains of Don's last load. He pulls off cleaning the shaft with his lips as it slides out.

"Good morning, Earl," says Don smiling and stroking his hair. "No time for more fun now, we've got to get ready for class."

"Lets hit the showers," suggests Mike from the side of the bed where he and Logan are drying some of the spunk coating their bodies. He tosses a couple of towels to Earl and Don.

Earl scrambles to his feet and helps Don off the bed. He grabs a towel and starts to dry off Don. This gives him his first real opportunity to compare the effects of the muscle growth formula on each of them. He was measured at seven feet before Logan and he left the lab and now Don matches him in height. But, Don, as requested, is over a 100 pounds lighter. He still has that gymnast build, now not oversized, but more like a giant. His muscles are smooth and defined and incredible hard and strong but not outrageously bulging like Logan's, Mike's or his own.

At seven feet and 300 pounds, Don sported a 52 inch chest which Earl thought looked all the more impressive paired with a tiny 26 inch waist. Not an ounce of fat obscured his tightly knit abdominal muscles. His 24 inch arms and 36 inch legs would be standouts in most lineups, but here, he was the runt. Logan had twenty more pounds and was over a foot shorter with 28 inch arms and 45 inch legs. Earl topped that with 420 pounds on a seven foot frame. The extra size and mass allowed him to sport a 72 inch chest, 31 inch waist, 34 inch biceps and 52 inch quads. Of course, Mike made them all feel small. At eight foot three inches, 600 pounds, 98 inch chest, 33 inch waist, 42 inch arms and 64 inch quads there was no resisting him. All their muscles were much stronger than even their impressive measurements might suggest. When Mike was assaulting Don's ass, Logan and he were unable to restrain Mike for even an instant with their combined strength and Mike didn't even notice their exertions.

After Earl finished toweling him dry, Don reciprocated. He enjoyed rubbing Earl's bulging muscles, so much larger than his own. Not that he was disappointed, he wanted a body that would still be sleek enough to allow him to continue track and field events. With this equipment I'm a cinch for the Olympics, he thought. When he rubbed Earl's 14 inch soft dick, it started to harden so Don quickly backed off. No time for that now, he thought as he considered the cum splattered walls, floor and the inch deep pools that formed in the folds of the bed covers. A lot of that was deposited by his own 15 incher, now shrunk to only 10, and plum sized balls which could sure deliver a wallop.

Finishing their preparations, the guys fastened the towels around their waists and headed for the showers. Only Logan's and Don's equipment was actually covered by the towels. Earl's dick head hung down below the towel a few inches even when soft and Mike's 25 inch ever hard monster was still poking straight up to the middle of his pecs and was beyond any covering. After a little concern they decided that nobody could hassle them, so why worry.

When they entered the showers, the effect was spectacular. Stares of awe followed them, mixed with a little fear, even from guys who knew the roommates well. They were ceded a corner by students that were too cautious to get close. After a few minutes of examination most left quickly and they found themselves alone in the showers with one other. That was Wang Dong Li, the star of the gymnastics team and exchange student from China.

Wang, his family name, had to endure frequent ribbing over his names' sound in English. He explains it means the East is strong but, those that see him in the shower aren't so sure. If you shrunk Don down to 5 foot two and take away about half of his recently added muscularity you'd get Wang. And between his legs would be a nice fat 10 inch hard dong that makes so many of his dorm mates question his explanation for his name.

While others left, Wang stayed behind and was putting on quite a show, soaping up his muscles and stroking his dong up to its full size. All the while his stare locked firmly on Don. This was a serious case of lust. Finally, he spread his stance a couple of feet and bent double at the waist, locking his arms and shoulders against the back of his calves. This spread his butt cheeks and displayed his pink ass hole to Don and his friends, while, between his legs, he smiled and licked his lips.

"Don, you can't turn down an invitation like that," encouraged Mike, shoving him forward. "Do it, do it," the others joined in.

Don moved forward, slowly at first, and then with growing confidence. When he reached Wang he placed a hand on each cheek and rubbed his dick along the crack between them until he had his 15 inches hard. He then surprised everyone by doing a handstand on Wang's butt. Then with legs bent 90 degrees to his torso and spread in a vee, dick pointed straight out in front, he slowly rotated downward, neatly piercing the bullseye and smoothly sliding inside.

"Bravo, bravo, a ten, a ten," shout Mike and Earl in unison.

"Looks more like a fifteen," offers Logan.

Don uses his perch to make long slow strokes through Wang's gut. Wang, bracing his legs to support Don's 300 pounds, reacts with pain and pleasure from each invasion. He's never been penetrated so completely. His dong is soon leaking precum which drips down onto his face.

After a few minutes of sexual gymnastics, Don decides it's time to get serious. He plants his feet on the floor and lifts Wang up off the floor by the hips until he is again buried balls deep in Wang's ass. He rotates Wang 180 degrees until they are face to face, enjoying the unique sensation of Wang's guts twisting around the shaft of his dick. The two boys smile at each other and then Don starts sliding Wang along the length of his shaft.

"Hey! What's going on here?" A new man entered the showers. Vince Crawford, football quarterback, All American as a junior and star of the team as he reminds the other players at every practice. At six foot eight and 280 pounds, he was one of the big men on campus, Mike most admired before he became the biggest man on campus. Intent on the sex scene in the center of the shower, he doesn't notice the others. "You can't do that here. You fags get out," he shouts.

As Vince reaches to grab Don's shoulder, a large hand grabs his shoulder and holds him motionless. "Leave them alone," cautions Earl spinning Vince around.

"What happened to you?" says a startled Vince after recognizing the team's much changed cornerback.

"Let me show you," replies Earl forcing Vince to his knees with a fraction of his strength. "Suck it," he says pushing Vince's face against his shaft.

Vince is in a panic. He can't move in Earl's grip and his face is being rubbed on the biggest dick he's ever seen. He makes his fist and pounds on Earl's massive thighs, each one as thick as his chest. It's like hitting a brick wall. The pain from Earl's squeezing his shoulders ends his last thought of resistance.

"Come on, suck it," insists Earl. He whips the still semi-soft dick into the side of Vince's face with loud smack before offering the head to Vince's lips.

Vince's tongue sneaks out for a tentative lick before his lips part to accept the head.

"No teeth," cautions Earl, squeezing Vince's shoulders for emphasis. As he begins to harden, he pushes in a few more inches. He can't get more than six or seven inches in before Vince starts to gag, so he settles for a short fucking motion, stroking the tip of his shaft through Vince's lips until he's fully hard. He then pulls out of Vince's mouth and his now 20 inch dick snaps upright along his abs.

"No way can I swallow all that," states Vince gasping for breath.

"I know," agrees Earl, pulling Vince to his feet, spinning him around and bending him over. Vince knows what's coming and resumes his struggles. They have no more effect this time. Earl presses his chest to Vince's back and reaches one hand around to control the shaft of his soft dick. "It will be easier if you relax," he states.

Earl slides his dick through Vince's cheeks and positions the head at the entrance. When he touches the target, Vince stops struggling and stiffens completely. The quarterback's ass muscles are no match for Earl's dick. A little pressure forces open the gate and Earl slides the head of his shaft inside accompanied by Vince's scream.

"I said relax," Earl reiterates. "You might enjoy it. It's not every day that a real man can spend the time to educate a dirt bag like you." This time Vince loosens his guts and Earl slides in a few more inches. He begins a slow stoke, trying for a little more penetration with each inward thrust. Vince grunts as if punched in the stomach each time Earl bottoms out, but, his dick hardens and soon Earl is stroking his eight inch pole in time with his fuck.

When Earl has worked 12 inches inside, Vince screams again. This time in orgasm as he shoots a load from his dick which flies out with such force that it splatters off his face. His spasms bring on Earl's release as he dumps a large load in Vince's gut. He remains hard and, with the added lubricant of his cum, starts making real penetration with each stroke. Vince is now moaning on each in stroke and out stroke, eyes wide, mouth open, panting for breath, the residue of his jism dripping from his face.

Don, who had slowed his own fucking to watch the scene, now resumed in earnest. Mike and Logan also watched from the sidelines. "No need for us to be the odd men out," observed Mike as he grabbed Logan by the waist and hoisted him onto his dick. Soon all 25 inches had disappeared inside Logan's ass and they began their own strenuous fuck.

With everyone going at it hard and heavy, Wang, suspended parallel to the floor by Don's grip on his hips, arches his back and manages to bend far enough to squeeze almost half his hard dong into his mouth. His sucking and Don's fucking quickly bring him off. His spasms trigger Don who empties load after load up Wang's tight ass while Wang swallows his own juice.

Earl, now stroking all 20 inches to good effect, is next. He drives in balls deep and releases another massive load. Each spurt causes Vince to wince as if he is being punched in the gut by each eruption of Earl's dick. It doesn't stop him from shooting his own dick off too in an orgasm as forceful as his first. Their passion peak lasts almost a minute and then Earl resumes his stroking. In just another minute both men unload again. This time Earl pulls out, letting Vince collapse to the floor. He turns him over and shoves the end of his still shooting dick in Vince's mouth. Vince grabs the slimy shaft with both hands to stroke and steady it as he sucks and swallows for all he's worth to drink down Earl's gift. Finally spent, Earl pulls back his softening dick while Vince rests exhausted on his back, slowly licking his hands to get a final taste, while his own dick drips out its last drops on his belly.

Mike and Logan, last to start, are last to finish. As Mike builds the pace, he finally unloads a massive torrent of cum in Logan's gut. This triggers Logan, whose first shot splatters off the ceiling. After a few more loads, Mike pulls Logan off and they direct the rest over Vince's sprawled form, coating him from head to toe in a blanket of white.

After a few more minutes under the spray to wash off from their exertions, Mike, Logan, Don and Wang are ready to leave for their day's classes. Earl stops over by the still prone Vince and orders, "After practice today, you will wash me in the team shower, then suck me hard and bend over for your fuck. Do you understand?" Vince nods weakly yes and the guys file out.

Part Seven

It's Saturday evening and Don, Earl and Mike have just finished moving in to Dr. Logan Green's off campus house. He has converted the entire daylight basement into a combination bedroom, gym and medical lab. For a bed, four king size super firm mattresses are laid out on a sturdy platform to form a huge square shaped sleeping area. Special water repellent sheets cover the bed in anticipation of gallons of cum. The exercise area was beefed up from the one he had on campus and can handle lifts up to 10,000 pounds, but, even this proved too little to exhaust Mike's thighs. The lab, duplicate of the one on campus, and a bath with a shower big enough for four, completes the setup. Just out the door there is a large private fenced yard with a large heated spa tub.

The boys were dressed up in the special exercise clothes Logan provided for what he described as a special house warming banquet. It was huge; more food than they normally ate in a month, Thanksgiving included. Logan just told them to dig in, promising they didn't need to worry about getting fat.

Afterwards, down in their room waiting for their evening's guests to arrive, Don asked, "How do you know we won't get fat?"

Logan thought a bit and answered, "I analyzed our tissue samples. Normal food isn't nutritious enough to make us grow. It can power our muscles. In a normal body any excess would be stored as fat, but a side effect of the muscle growth seems to be that, for us, we store enough energy in our muscles themselves to run about ten marathons and any additional is turned into cum."

"Doc, you set us up," observed Mike grabbing Logan and sprawling him across his thighs. "Bad boy, bad boy," admonishes Mike as he lands one slap on Logan's firm glutes hard enough to split the seam of his shorts from waist to crotch.

"Ouch. Guilty," confessed Logan. "I planned to take advantage of all that extra cum to make this a party no one will forget. So Mike, punish me with your dick, not your hand."

In response, Mike tears off the rest of Logan's clothes and tosses him into the center of the bed. He takes off his own clothes and then jumps on top of him. Logan disappears under Mike's immense body.

There is a knock on the door to the yard. "I'll get it," volunteers Earl. It's Wang Dong Li and Vince Crawford; the guests they expected.

Wang, who had already removed his clothes, tosses them by the door, runs past Earl and jumps into Don's arms. They kiss long and deep. Greetings out of the way, Wang hops down, guides Don to the bed and begins stripping off his clothes. When Don's dick is freed, Wang expertly sucks it hard and then in a smooth motion sits down upon it and starts his ride.

Mike looks up from toying with Logan and remarks, "You need to fuck him more often, Don."

"We fucked three times this morning and four times yesterday. He just can't get enough."

Meanwhile, Earl has taken Vince aside. "Undress," he orders. Vince complies without hesitation. His dick is hard. "Now undress me." Again Vince responds, this time moving as close to Earl and feeling as much of his body as he can without annoying his master. "Suck me hard," is Earl's next command. Vince eagerly pounces on Earl's cock, getting 10 inches down his throat, a new record, while stroking the other half with his hands. When he's stiff, Earl withdraws his dick and orders Vince to wait in the corner for his call. Vince goes as directed and sits in the corner playing with Earl's jockstrap. As Earl heads for the action on the bed he calls back over his shoulder, "And, no playing with your dick."

As he approaches the bed, Earl sees that Wang has worked Don into a frenzy. He's bucking with his hips each time Wang slides down his shaft. The collision throws Wang almost off his dick as Don drops his hips for the next thrust. Still wanting more, Don clamps Wang to his groin and rolls forward pushing him back onto his shoulders. With his hands on Wang's thighs, he bends the flexible gymnast into a ball, ass upward. Wang's mouth clamps onto his hard 10 inch dong as Don resumes his assault on his ass, driving all of his 15 inches through the tight gut.

Wang is in his favorite fuck position. Staring past his dick, he can see Don's dick pound his abdominal muscles from the inside. It feels great. Nobody can stimulate him like big brother, Don. He feels the tingling in his balls and the throbbing in his dong that announce the surge of his load down the shaft. It floods over his tongue with the familiar taste and fills his mouth. He swallows and awaits his next shot. A spasm in his gut from Don's wildly twitching dick announces his lover's orgasm. He can feel the load of cum racing down to be deposited deep inside him. It arrives with such force that he is momentarily stunned. His dong slips from his mouth spewing on his neck, face and hair. Don's next load slams into him, bigger than the last. He's been fucked by Don a dozen times since their first in the shower but never experienced anything like this! It's great! The hot cum seems to be spreading everywhere inside him as Don delivers load after load. Don resumes stroking his still pulsing dick. Each up stroke pulls up a load of juice from below which pours out over Wang's ass and flows over his belly, his balls and down his dong. Wang replaces his dong in his mouth and awaits the treat flowing down it which soon enters his mouth to mix with the juice still being pumped out from his own balls.

With his last orgasm not even over, Don unleashes a fresh explosion. This time there's no room in Wang's ass. As soon as Don unloads, the cum sprays upward around his buried shaft dousing everyone near the bed. Don and Wang especially, are coated in cum. After two loads back up on him, Don removes his dick from the ass and plunges it into Wang's mouth, right beside Wang's own. Wang swallows manfully and manages to get about half of what Don offered. After their passion ebbs, Don stretches Wang out on the bed and lays down beside him. They kiss, cleaning their faces with their tongues and sampling the tastes that still linger in Wang's mouth. When they finally have time to notice something beside each other, they see that the depression Wang's head and shoulders made in the mattress has filled with a deep puddle of spilled cum. They slide over to it and, like two lions at a watering hole, bury their faces in the pool to drink it up.

Meanwhile, Mike is busy toying with Logan as Earl watches. He is rubbing his dick all over Logan's body while manipulating his arms and legs, licking and massaging his muscles. This has gone on for 20 minutes, exciting Logan but not giving him any sexual release. Logan is helpless. Each time he tries an independent movement he is restrained by Mike's greater strength.

Mike rolls Logan onto his back and gets on top. He slides his stiff dick over Logan's as their bodies grind together. He slides down Logan's torso to tease his tits with his tongue. His arms pin Logan's as his hands reach up to hold Logan's head immobile while two of his fingers fuck Logan's mouth.

"Please, please fuck me," begs Logan for the tenth time. "I apologize, I shouldn't have set you up. I was just trying for a surprise to make your first night here unforgettable."

"Apology accepted," replies Mike as he flips Logan over, hauls him to his knees and shoves 25 hard inches up his ass in one long stroke. After all their foreplay, Mike knows he won't take long as he begins a slow fuck stroke. Earl is lying beside them, watching, stroking his dick just enough to keep it hard. It gives Mike an idea. He rocks back on his knees, pulling Logan up onto his lap with his legs spread widely to hang down over Mike's twin 64 inch tree trunk thighs. He then grabs Earl's ankles, and, with a flick of his arm, whips him out in front and over on his back. Raising his legs high in the air and splitting them wide apart, he hauls Earl up until Logan's hard 11 inch dick plugs Earl's butt. Before Earl has time to react, Mike grabs his hips and strokes his ass over Logan's shaft in time with his own assault.

Now with Logan nicely sandwiched, Mike turns his attention to Earl. "Vince get over here," he shouts. Vince is there in a heartbeat. "Sit on Earl," Mike demands. After a questioning look at Earl and his nod of acceptance, Vince straddles the pile of bodybuilders and carefully eases about half of Earl's pole up his ass. Too carefully for Mike, who, with a sweep of his arms, knocks Vince off his feet so he comes crashing down on Earl's lap, instantly stuffed with his 20 inches. Earl steadies Vince with one arm around his chest while the other hand caresses his face to soothe the pain of penetration.

Mike is ready for some serious fucking. He rolls onto his back dragging the whole group on top of him. They are stacked on the bed four high with Mike on the bottom, each man in the ass above him. With his hands on Earl's hips he raises his roommate a few inches above Logan, then, bucking his hips, he tosses Logan in the air until he slams into Earl. Then Logan falls back down along Mike's dick until he's ready for the next bounce. After a few experimental tries, Mike gets the hang of it. The key is to keep Earl's ass no more than eight or nine inches above Logan so the doctor's 11 inch tool doesn't slip out. With careful control he finds he can launch Logan a couple feet in the air and then slam him back down again using Earl. As a bonus, when he slams Earl down into Logan, Vince keeps going up until gravity takes over, giving him his own thrill ride.

Mike gets into a rhythm. Logan, Mike can tell, is really enjoying himself. All he does is grunt at each impact but his eyes have that glassy, far away look that he gets when he's overcome by inner sensations. Meanwhile, Earl is moaning from every stroke and Vince, on top, gives little squeals of delight each time he comes crashing back on Earl's body. Logan reaches his orgasm first, shooting powerful jets into Earl's ass. This triggers Earl and Vince. The contraction of Logan's gut in time with his powerful ejaculation pushes Mike to a level he never reached before. As he unleashes a flood of jizz into Logan, he bucks so powerfully that the impact with the doctor's body knocks Earl completely out of his hands and six feet into the air. Earl flies off Logan's dick carrying Vince with him while Logan sends a pillar of cum after them.

As Earl and Vince come crashing down on the bed a few feet away, Mike hugs Logan to his chest, rolls him over onto his front and pushes his shaft in as far as it could go. Earl is doing the same with Vince.

Mike has never cum like this before. It's surging out of his dick in a high pressure stream. He can feel the contractions in Logan's gut and the flow of his juices up his shaft. Soon there is no room for more inside and cum pours out of Logan's ass.

Earl is having better success with Vince. He has a good tight seal on Vince's almost virgin ass and Vince isn't strong enough to resist the flow of cum at the pressure Vince is supplying. So far all they've spilled is a few ounces from Vince's four orgasms. Earl awakened something in Vince he hadn't know existed. But, in the three days since he really got to know him, Vince has never felt anything like this. Earl is filling him so completely. His essence is pouring through Vince's body, warming his bowels, his stomach and now his chest. Cum floods up into his mouth and pours past his lips. Vince can't breathe. Fortunately, Earl sees what's happening and quickly withdraws his still spurting shaft. Vince coughs, swallows and gasps for air. After three days of eating and drinking nothing but Earl's cum, he is finally full. A fifth orgasm wracks his body as he lays recovering on the bed.

Logan finally passes out after sustaining his passion peak for almost ten minutes. Mike pulls out leaving Logan lying in a pool of cum that covers his balls. He and Earl are still shooting and show no sign of stopping but have no place to deposit their load. Then they notice Don who has Wang on his back with his legs against his chest as Don pounds his shaft into Wang's ass. Mike looks at Earl and they scramble over beside the two Asian studs. They sit face to face, legs spread, as close together as possible. As Earl holds their throbbing dicks together with both hands, Mike places his hands on both boys' backs and lifts them as a unit. Then he lowers Don onto the combined shafts. Don doesn't miss a stroke as he grips Wang's torso and slides him along his shaft while his roommates do the same for his body on their paired manhood. By the time Don is fully impaled, he and Wang have started shooting; Don into Wang and Wang about five feet into the air. Still cumming they hug and share a deep kiss oblivious to everyone but themselves. Mike reaches around Don and Wang and hugs Earl to him. They kiss as well as their bodies surround and engulf the smaller boys. Locked in the embrace they wait as over several minutes their orgasms subside.

Passion sated for now, the boys break their sexual huddle and take stock of the results of their play. There are pools of cum, inches deep in spots, all over the bed. Cum splatters the ceiling, walls and floor. Logan has passed out and Vince is still recovering from his last fuck. Don and Wang take charge of dealing with the pools of cum, starting with the biggest one right under their butts. Mike flops on his back, resting, and Earl calls for Vince.

When Vince scampers over, Earl kisses him deeply, tasting his own cum. It is their first kiss. Vince is ecstatic. When they break off he eagerly cleans Earl's shaft with his tongue and then moves on to clean the cum off his body. Orders are no longer required as each boy knows his place in the relationship. When Vince is done Earl licks his shaft clean and soothes his sore ass hole.

Don is drinking the cum pooled between Logan's legs while Wang handles the one where Earl and Vince got together. As Don is lapping up the last of the deposit, Logan suddenly wakes and pushes to his knees. Looking beneath him he sees Don, face and hair dripping jizz juice, with the tip of his cock in his mouth. Getting to his feet Logan announces, "I'm hungry. Let's refuel before round two. There's plenty of food left upstairs." He heads off to eat and the others follow.

At the table Wang sits on Don's lap and Vince on Earl; not sexually, just cuddling. Logan has a house rule; no sex upstairs to protect the furniture. Logan filled their guests in on the reason for the big spread and they enthusiastically join in stuffing their partners with all they can eat. Wang feeds Don but eats nothing directly. Periodically, he kisses Don and is passed a morsel Don has partially chewed. Somehow it feels very intimate. Vince feeds Earl but takes nothing himself explaining that he's already full from Vince's cum. There's nothing fancy for Mike and Logan, they just dig in.

When everyone seems to have eaten their fill, Logan shouts, "Ready for more? First one to the bed gets fucked by Mike!" He races for the stairs.

Logan, however, is not the winner. Vince makes a diving leap like he was going for a first down and beats him by an instant. But Vince doesn't want the prize for himself; he offers it to Earl so long as he can suck Earl while he's being fucked. Earl accepts and tosses Vince on the bed and jumps on top of him in a sixty nine position. Vince grabs Earl's dick and feeds it more than half way down his throat while Earl goes down on him and sticks his butt in the air for Mike.

Mike steps between Earl's legs, spreading them a bit more to the side to make room for his massive body. He bends forward resting his pecs on Earl's ass while wrapping one arm around his waist. This is the perfect position to put the tip of his 25 inch shaft at Earl's entrance. Mike slowly pushes the head and the first few inches inside. Earl had been fucked before by Logan but that was nothing compared to Mike. He reflexively tries to pull away, but Mike's arm has him pinned. He sucks hard on Vince to avoid crying out. Vince sees Earl's reaction and intensifies his own sucking to distract Earl from the pain of penetration with which he is very familiar.

Mike slides a few more inches in, stopping momentarily when he feels Earl trying to pull away. When he has 11 inches in, the length of Logan's tool, he enters virgin territory and the passage becomes much tighter. He starts the slow in and out motion he used to open up Don. It works even better on Earl, who already has his muscles enhanced. Mike makes steady progress and the tightness is really turning him on. A few minutes later his orange sized balls slam into Earl's, only slightly smaller, ones. He's in.

Now Mike ups the pace, slamming harder and faster, with longer and longer strokes. With the passage expanded, the pain is gone and only pleasure remains. Mike releases Earl's waist and he bucks back to meet Mike's strokes. As the friction from Earl's gut heats Mike's passion, he fucks harder and harder, overpowering Earl and pounding him into the mattress while shoving more and more of Earl's dick down Vince's throat and esophagus. Logan spots what's happening and gets ready to pull Vince out, but he sees he's still managing to breathe and, from what he can tell, having the time of his life.

Finally, Mike can hold off no longer and his load races down his shaft. With a final shove he drives Earl into Vince's mouth until his balls hit the nose. Mike unloads deep inside, while Earl begins pumping his cum into Vince who then gives Earl a taste of his own seed. This continues for a couple of minutes until Mike feels pressure build telling him Earl is full. Mike quickly pulls out his still spurting tool, then grabs Logan and pulls him down upon it. In a few seconds Logan joins in orgasm; his first shot hitting the ceiling.

When Mike withdrew from Earl, cum poured out for a few seconds until his ass could adjust. This coated Earl's balls and dick and Vince's face. Vince snakes his tongue around Earl's shaft and licks his balls to sample this treat. Earl is still unloading, but, so far down inside him that Vince wasn't able to taste any. Vince had listened to Logan and made sure Earl ate enough to fully recharge his balls. It sure worked, Earl has been pumping him for what seems like five minutes and shows no sign of slacking. Vince has come a few times himself, but only spoonfuls compared to Earl's quarts. Finally, Earl fills him up again and each shot he feels racing down Earl's prick to his stomach is matched by an equal squirt out his ass. Fortunately, the seal with his throat is tight enough to prevent it from backing up and he can still inhale around the shaft.

Wang spots the cum flowing from Vince, and scoots in between his legs to drink it while its still warm. Don gets on top and drives his dick up Wang's ass. In a few more minutes all the guys are lost in their sexual play and round two is well underway.

A few hours later, the boys are winding down from round three which took place in the hot tub. Relaxing in the water, now cloudy from all the cum mixed in it, they ease down from the night of pleasure. Vince is sleeping against Earl's chest, his legs splayed over Earl's thick thighs and Earl's, still partially stiff dick up his ass. Wang is still bouncing on Don's dick with seemingly limitless energy. His talented ass has milked Don's latest orgasm out for over half an hour while every few minutes his own dong spurts, recycling some of love juice he's been drinking all night. Don is dazed and exhausted as, eyes closed, he is focused on the pleasure radiating through his body.

Logan is sitting on Mike's stiff pole, now quiet. His back is resting on Mike's chest as Mike's 42 inch arms enfold his body. He feels so safe and secure in Mike's massive embrace.

"Wonderful party, Doc," observes Mike. "I know we're going to have lots of fun living here." He flexes his mighty shaft inside Logan's guts for emphasis.

The End