Hmm... one of the problems is that I'm not the wittiest of people. I just aaargh, I need someone to tell me why they are doing it. It happens every lesson... I just think that if I told the teacher, there's not much they can do about it 'cause the guys can easily say "we're takin' the piss, get a backbone" or something. I would love to "get a backbone" but it's not as easy as to just brush off their comments...
I know I shouldn't care about what they think but when they say something outloud, the class attention is very much diverted to me directly so that the whole class knows about it and is waiting for my reaction. It's not like I can pretend that I didn't hear it.