Wyatt was a little boy in fourth grade. He was short, thin-as-a-rail brown-haired boy. But what really mattered to Wyatt right now was the fact that he REALLY needed to pee right now. He was practically dancing in his seat trying to get the teacher's attention.
Finally, permission was granted, and Wyatt dashed off to the bathroom. After relieving himself, he decided to get a drink from the water fountain on the way back. He took a long swig, then he felt dizzy and ill.
Wyatt stumbled back into the bathroom, where he threw up into a toilet. After flushing and regaining his balance, the boy noticed that things seemed a lot smaller than before. He made his way to the mirrors, and what he saw made him scream.
There was no short forth-grader in the mirror. Instead, there was a tall hunky young man, probably 6'7". The guy was also pretty hairy and muscular, about 210 pounds. His body was now so big that his clothes can't hold it and tore apart around his muscles, revealing pillow-like pecs covered in brown hair, he can even watch hair coming out from his armpits and a thick treasure trail going from his navel to his... Oops! Wyatt blushed, he can't believe how much he had changed!
Wyatt ran his hands all over his tight new body, wondering how this was possible. Just then, a janitor walked in and saw him.
"What the-?! Who are you and what are you doing here?" he said. "And what happened to your clothes?"
"Uh, sir, you must help me... I I'm..." Wyatt stuttered in his new deep voice while he thought that maybe he shouldn't tell the truth because no one is going to believe it.
"I can lend you an old jumpsuit I have, but you must leave immediately before I call security." The janitor said. "You can wait in a stall and don't come out until I'm back. Understood?" Wyatt just nodded before he stumbled over a stall at the bottom. After closing its door, he instinctively take his torr clothes off revealing a lot more of hairy body. He was astounded of seeing hair on his feet, thighs and... butt. He blushed again. If he was quite hairy in those areas what he should expect from his groin. His small shorts didn't help to hide the almost obscene bulge between his legs. Was he ready to discard his underpants? He sighed while he put his fingers inside it. He can feel some tickles because of his poking out pubes. He closed his eyes, sighed and suddenly pulled his pants down.