DISCLAIMER: This story involves male/male sexual situations. If you are legally prohibited from reading such material, or find such material offensive, please stop reading now. This story is fiction, and any resemblance to actual people or events is coincidental.
Also, in fantasy land condoms may be unnecessary. But in real life, always practice safer sex.
My apartment building in Chicago had just gotten a few coin-op washers and dryers and set them up in a little room in the basement of the building. There were about 16 flats in the building all together, and each unit had a key to the room. I almost never saw anyone else in the laundry room, though occasionally I'd find someone else's clothes in a washer or dryer.
One day though, I found a single pair of plain cotton men's boxer briefs on the folding table. I made sure the door was closed and locked behind me before I sniffed them to see if they were clean or not. They smelled strong and musky at the front of the cock pouch, right where the fabric must have cradled one of my neighbors' sweaty balls. My cock started swelling instantly, and soon it was straining my own underwear and my jeans. I pressed the heady boxers to my nose and inhaled deeply, savoring the scent. I started rubbing my thick, meaty cock through my jeans, stroking up and down the rock-hard shaft and rubbing the knobby head in circular motions with my palm.
I looked closer at the underwear, hoping to find dried cum where the tip of the guy's cock would rest snugly at the front of the boxer briefs. No luck. Maybe this guy eats his load, or maybe he was saving up a big load of cum for someone he was planning on fucking soon. Maybe he always shot his wad in a sock or a tissue, or something. All I could think of was where this guy had deposited his cum, since he hadn't left any in his briefs.
This made me so horny, I didn't care if anyone came in and found me sniffing some stranger's underwear. I unzipped myself, and pulled my fat, uncut 7" cock out of my pants. I used some spit for lube, and started stroking hard and fast. With my free hand, I smelled the ass end of the boxers. It smelled slightly ripe but pleasantly masculine, and it turned me on like crazy. I'd never seen anyone in there before, so I figured I'd be safe. At the same time, I knew there were about 15 other people with keys to the room, and any one of them could walk in at any moment and catch me in the act.
My cock was thrusting in and out of my fist, the foreskin sliding back and forth over the engorged purple head. I took in another whiff of the pouch in the front of the boxers, and started imagining whose cock had been tucked in there. The boxer briefs were a size small, so they could belong to one of the three skinny as fuck, pseudo-punk, bike-riding hipsters who lived together upstairs. I'd often checked them out as they walked past in their skinny jeans, trying to get a covert assessment of the size of their meat. At least one of them seemed to be pretty massively hung, even when soft, as evidenced by the lump I always saw in his ball-hugging pants.
Or the boxers could be home to the cock of the conventionally hot, clean-cut professional guy who lives with his girlfriend on the third floor. He has short red hair, an adorable smile, and what appears to be a really fit body. He goes to the gym after work, and comes back sweaty in a t-shirt and loose workout pants. Sometimes I can catch a glimpse of his rod bouncing back and forth in his loose pants. I stroke my cock harder to the thought of him pulling his sweaty shirt and pants off, leaving only the tight boxer briefs I'm holding up to my nose. I picture him pulling the front down slowly, revealing his bulge inch by inch. First he reveals the root of his cock, with it's patch of groomed red pubes. Then his heavy shaft comes into view, inch by beautiful inch. Finally, the entire length of his cock pops free, hanging heavy out of his boxer briefs. He tucks the fabric down around his tight hairy balls and starts jerking his long, thick cock.
Overcome by lust, I wrapped the sweat-stained boxer briefs around my cock, and imagined it was actually his cock I was rubbing against my own, that the tickle of the fabric on my balls was actually the feeling of his balls bouncing against mine in time with my strokes. The friction of our cocks rubbing together is so intense, I feel my balls begin to churn. I pump my cock into the boxers in my fist harder and faster, grunting and moaning and imagining the clean-cut neighbor boy bending over, pulling his ass cheeks apart and begging me to fuck him raw.
I pulled the boxer briefs away from my cock and back up to my nose. I was fast approaching orgasm, and I didn't want to get caught by doing something as stupid as leaving a wad of cum in some random guy's boxers. Instead I lubed my hand up with the precum that by now was flowing from my slit, and started stroking my cock head furiously as I pressed the boxers to my nose and inhaled the strong scent of sweaty cock, balls and ass.
I imagined pressing my pulsing head to the tight quivering hole of my red-headed upstairs neighbor, and slowly fucking my rod deep into his bowels. I imagined making him cry out as I pounded his prostate with each thrust. I inhaled the scent in the boxers and hoped they were his. I imagined our bodies getting slick with sweat, and the wet smacking sound of our skin and balls slapping together with each hard fuck. I him moaning each time I pushed my solid cock deep into him, and again each time I pulled it out. I imagined him bucking up against me, fucking himself hungrily against my prick, oozing precum steadily into his ass. I imagined grabbing him by the shoulders so I could fuck my cock even deeper into him.
And then I started moaning uncontrollably as I felt my orgasm building in my balls. I felt it rush through my shaft and saw long, hot, sticky ropes of cum shoot from my cock as I continue thrusting jerkily into my hand, overwhelmed by the pleasure. Meanwhile, I was trying to extract every bit of manly scent from the discarded boxer briefs. Eventually my cock became too sensitive to continue jerking it, and I tucked it back in my pants.
I grabbed a rag from the wash basin and wiped up the cum that was now splattered all over the cement floor of the room. I washed it out and put the boxers back on the table where I found them. It was time to do my own laundry, but I left one pair of my boxer briefs on the folding table -- a pair with a large dried cum stain in them.