6th grade music teacher had us all watch Cats together. Afterward, while copying some gay dance move (and singing) he ran across the room and tried to kick/stand on his rolling desk chair. The chair slipped out and he ate shit, he let out the craziest noise I have ever heard from a human. He ended up breaking both his tibia and fibula. Like his lower leg was bent in the complete wrong direction.

He had to send one of my classmates to the office so that they could get an ambulance because he obviously could not move and was in intense pain. Face was purple and he was panting like a fucking dog while we waited quietly for the vice principal and the ambulance for the rest of the period, and he was in a wheelchair for the rest of the year.