My old Biology teacher in high school threw books at people though. He was fine, until he got pissed, and he went crazy, and he had been around so much and had so much favorability among parents, students, and alumni alike he wasn't going to get fired or get in trouble for it, he probbaly got encouraged to do it. But I seen him throw water on a girl in the lab, tell someone to get the hell out, and he's been throwing books at people for years, it's always funny when you hear of that happening. It was so funny when he got pissed off.