Walking out of the men's room, Dustin spied a boy, probably around 12 or 13, sitting on the bench opposite. He was wearing shorts and a T-shirt, nothing special. Finding a quiet place to lean against the wall, Dustin began to stare. Immediately, he noticed movement in the boy's groin.
“Uhmmm” the boy groaned, as he began to feel his cock expand. It grew from 3 inches soft to 5 inches in length in a few seconds. His balls slowly grew from the size of grapes to ping-pong balls.
But, something else happened. The shorts didn’t seem to stretch. Instead, the fabric began to grow as the boy’s genitals continued to expand and push up against the inner layer of the material. So instead of his shorts growing tighter, the shorts simply stretched, new fabric growing as it adjusted for the boy's growing endowment.
"Ohhhhhhhhh" the boy moaned quietly as his cock grew further. By now he was 7 inches soft, and his balls were approaching the size of eggs. It was starting to look ridiculous on the boy, so Dustin stopped staring, for now.