One time, I got to school a bit early, so I decided to prank one of my good friends. I took one of his shoes and because I am considerably tall, tied it up on the ceiling with a piece of string. When he came into school, he went to his locker and was surprised to find that one of his shoes was missing. He went through the rest of the day with one shoe, until near the end of the day the string snapped and the shoe fell from the ceiling.
This is the best story I can think of right now.