I've done that in HS, this kid kept fucking w/ me in Bio, Freshman year, he was kinda friends w/ my friend, but really no one liked him much. So since he thought he was kinda friends w/ my good friend, he got the right to mess w/ me like friends do you know? Wrong. I put up w/ it for about a day, of him like punching me in the back and shiz. So after Bio got out I walked out the room waiting in the hall for him to walk out. Grabbed him by the shirt and slammed him up against the wall. Yelled in his face for a bit, and scared the shit out him. Then my G/F was like OMG stop, lets go bla bla bla. So he never fucked w/ me or even talked to me again.