Jeff couldn't believe what he had become. He was the embodiment of every muscle fantasy he had ever had, and he couldn't wait to show off his new body to the rest of the guys in the locker room.
But suddenly, he felt a pang in his crotch, and he doubled over in pain. He realized that the jockstrap he had put on was desparately trying to cover the cock and ass of a muscle-god. He ripped off the jock in one smooth movement, and out flopped a huge, thick cock, laying on top of two extra-large balls. Behind him was a huge juicy, smooth ass.
"Holy shit!" Jeff exclaimed, looking at himself in the mirror. "This is insane!"
He turned around to get a better look at his new cock and balls. They were massive, far bigger than anything he had ever seen before. He couldn't resist the urge to touch himself, and as he did, he felt a surge of pleasure run through his entire body.
"Fuck," he moaned, feeling his new muscles contract and flex as he began to stroke his new extra-thick dick.
He watched in amazement as his cock rose up, throbbing with pleasure. It was so thick and warm in his large hands. He couldn't even touch his thumb to his middle finger as he stroked.
If he had been worried about Mike in the bathroom stall, he had surely forgotten by now.
He jerked off furiously, lost in the pleasure of his new body. His balls bounced heavily with each thrust, and he could feel them tightening as he approached the brink of orgasm.