I remember, when I was about 14, there was a kid in my class who acted all tough all the time. He thought he was it. One day, in English class, him and the other boys sitting opposite me kept pushing the table into me a bit, trying to get me to fall off my chair.

After a while, I suddenly snapped and rammed the table into him, pinning him against the hot radiator. The teacher saw what happened and sent him out of the classroom, and as he walked out he turned to me and said, "You're dead!"

But he never bothered me again after that.