My 8th grade math teacher was a bit of a hard ass. He was also the school wrestling coach which probably had something to do with that. He was about 5' 7" and wore big, thick industrial-arts-type glasses. His name was Mr. Schmidt, but some called him Mr. Shit. What was most memorable about him is that when someone was goofing off in his class, he would ask that they either do 25 pushups at the front of the room or go to the principal's office. Most preferred to do the pushups.
It was always amusing to see a student (usually a guy) go up there and show off their physical prowess. I do recall at least one girl having to go up to do the pushups as well. One afternoon, he even challenged one of his students to a wrestling match.