His cock was getting so hard he was sweating profusely. 'I guess this is what sweating bullets is like he thought.' His clothes were starting to get unbelievably uncomfortable he had to get them off now! Kicking his pants and underwear off at the same time, he felt his balls getting heavier, if that was possible. Looking down he noticed that a happy trail descending to his pubes and thought that cant be possible he hadn't had one this morning when he woke up, he'd never had one. Small whimpers and moans could be heard coming from his pursed lips as his cock got even harder and started jumping around as if it had a mind of its own. "Whats happening to me," he got out of his mouth between the grunts and groans and heavy breathing. He look down again and suddenly wished he hadn't as he watched and felt the wiry hair on his balls grow and get softer before his eyes. Fur was starting to appear all over his body growing out from his pubic bush. Oh god what was that wonderful feeling that just enveloped part of his cock? Looking down to see what had happened he noticed the penis sheath covering a third of his engorged cock. The smell of his sweat was starting to really turn him on, he had just thought that he was horny before. This was the most intense feeling he had ever experienced. He took hold of the root of his pulsing hot tool and started a slow and steady rhythm. He was starting to spew copious amounts of precum out of his pee slit, so much that it was starting to drip onto the ground. His nipples were so inflamed and erect that they were starting to really hurt. As he was trying to rip his cock out by the root he didn't notice at first that his nails were growing long and hard and curving into claws. All he could think about was how this was going to be the best ejaculation that he had ever experienced. That's when pain so intense and shocking made his arms shoot out wide and his hands grip so tight he thought he would tear muscles. As he dropped to his knees he heard ever joint in his body crack. 'Oh god if only the searing and agonizing pain would stop,' he cried out in his mind. He felt the bones in his back and legs snap and his skull start rearranging itself as he screamed out in terrible pain. His eyes, nose, and mouth felt like they were burning as a muzzle started growing out of his face. Blind and in terror, sweat running in rivulets down his changing body the boys mind went into hiding some place deep inside. What took its place was more carnal. Primordial patterns coming to the forefront to carry this new self through its final change. He stumbled to his feet feeling like he was high as his new yellow eyes flew open to see the night bathed in a new light, the light of the moon. He opened his mouth to say hello to Luna, his lover with a longing low howl. She greeted him as only a lover can releasing his tension in an explosive, gut wrenching orgasm. Long ropes of his cum shot out and over the air hitting the ground in their dual offering to mother earth. Over and over again the werewolf came in a back arching depletion of his fertile juices. Even after he stopped shooting into the air his cum kept poring out of his member and onto the ground. As his orgasm was ending he stuck his hand out in to the last dribbles and brought his hand up to his nose smelling of peat and sweat. Lapping it up with his tongue he thanks Luna for this salty offering. Tuning his ears and nose to the night he gracefully loped off to stalk new prey.