-l337/chatspeak
-unoriginality
-bad spelling
-people who eat with their mouths open (it's absolutely disgusting)
-people who are really loud when eating (also disgusting)
-people who talk with swearing all the time, in every sentence (the swearing gets really boring. really)
-people who pretend to be "cute" and etc. (the idiots in my year, usually girls in the other form who are "popular" but are idiots anyway)
-people who shows off they're really smart (but the really smart people don't show off)
-the person who copies me in every test I have (physics, chem, prolly bio and Econ. but then again, she mucked up in the year 10 mock and got lower than me in all the sciences and the overall grade *am pleased*)
and the list goes