It was Rob's first day of school in a new town. Rob was 16, very average, didn't stick out in a good or bad way.
His first class was Physical Education and due to being such a full school and class his locker was in the older section of the locker room, all alone at the end of the hall.
Pulling out the piece of paper he worked on the old lock, turning the combination before lifting at the handle. It took a little bit of work to get it open due to it not being in use for so long, but he finally got it to creak open.
"Ewww!" Rob said as he noticed a neatly folded pair of sparkling white briefs on top of a folded ribbed white tank top. A small folded piece of paper lay on top. Opening it Rob read 'I'm magic, try me on!'
"Ha yeah right!" Rob said as he picked up the briefs and unfolding them, they looked brand new, never worn. There was no brand and the sewn in label was blank.
Just then he heard the dress out bell and quickly threw the underwear back into the locker and changed into his gym clothes before throwing the rest of his stuff in the locker and hastily heading outside for role.
A half hour of basketball later he is back in the locker room peeling off his sweat covered gym clothes and finds his boxer-briefs are also soaking wet. Thinking for a second Rob pulls out the odd pair of briefs and sniffs them. Smelling like a fresh breeze he decided why not and pulled them on. They fit perfectly. He only wished they weren't some no name brand, Maybe Calvin Klein or something; it was his first day after all and didn't want to be labeled as the cheap brief boy. Rob didn't even notice the waistband turning red with white 'Calvin Klein' letters appearing, or the shape of the underwear turning more modern as he pulled his pants up and pulled on his shirt. The label on the underwear now had the writing 'Changes will revert 30 minutes after being removed'.
As Rob began to walk out of the locker room he saw one of the jocks and thought to himself 'Damn I want arms like those!'.
Outside the locker room all Rob noticed was a slight tightness in his long sleeves as his arms and hands grew larger to exactly copy the jock's.
Off to English he went...