I know how you feel..I used to get teased sometimes at school too, when people would just say the most immature things Its always the so-called "popular" people. They like to make fun of others and think they're so cool doing it. And usually, its only the friends of them who laugh along. Whenever I see people make fun of others, I get really mad because I can think of lots of things to say back to them too. Its not like they're perfect like they think they are.

Just try to ignore them and try not to let them get to you...hopefully one day they will realize how immature they have been and stop.