How can i make these kids feel stupid ?

These kids in my homeroom like hate me. They were making fun of my friend, so i called them rude. So in turn they're calling me emo. I have dark hair, but no..i'm not emo at all! Ahaha. I don't care, and i find it funny. But i need a way to make them feel really dumb for even saying it. I want to show them idc. Any ideas?