or the time the kid held his asshole open for the world to see his soul
...Mr. Hobbs?
Edit:
We had a high school teacher who was a 6'6 Chuck Liddell lookalike, played Arena football. He would duct tape sleeping kids to their desks, leaving zero wiggle room, in 3 seconds flat. If he ran out of duct tape, he'd run up to the desk and scream like a psychotic banshee to wake your ass up. His screams could be heard across the school, and screaming was his preferred method of communication, even when he wasn't upset.
He was a badass.