This wasn’t embarrassing for me but there was a guy sat in front of me during one of those end of unit tests in maths and he had some anger problems or something. Anyways, he must’ve been struggling with a question and he got so annoyed that he swung his body backwards and his head slammed against my desk.
Another time, we were doing a history test and he was on the other side of the room. His pen ran out of ink so he ended up pestering the guy in front of him for a pen. The other guy kept ignoring him and getting on with his own test (presumably didn’t wanna get caught) so he got annoyed and got up and started hitting the guy. Apparently he tried to bite his ear too.
This guy was really weird and had quite a few problems so I felt sorry for him. He wasn’t exactly the biggest kid in school either. In fact, I would say he was more anorexic than anything, but some of the things he did were really weird.