I don't have any good stories for screwing with teachers, I'd usually just sit quietly and feel bad that others were doing it , if they were nice, or laugh if I thought that particular teacher was a douche.
My grandfather on the other hand has told me a few funny stories about times he screwed with some teachers, so I'll share a couple of those.
1) Grandfather was about 14/15 years old and was observing his teacher write on the board. His classmates and him always thought it was funny that this woman would lean in REALLY CLOSE to write on the board, her nose nearly touching it. One day my grandfather thought it would be funny to soften up a large piece of fruit in his hand and toss it next to her face and scare her. He tossed it, but unfortunately it didn't land next to her....it hit her on the back of the head. Her face smacked the board, and she slid down, splitting her chin open on the part at the bottom that holds the chalk. Despite school officials pressuring the class to sell out the person who did that, nobody talked.
2) He was 14 years old and in gym class playing basketball with this hyper-aggressive male gym teacher who would play really rough with the kids. He shoved my grandfather down a few times in order to get the ball and it pissed him off. So eventually, my grandfather had enough and decided to charge at him from the side when he was running. He ran up, jumped in the air and checked him in the shoulder. The teacher fell, his shoulder hurting as he yelled out my grandfather's name, who by this time, was hauling ass to the door lol.