A derogatory word for someone a certain person does not particularly like. Used to show how much person a knows about the "scene" by insulting person "b".
Person B: Hey! Do you like Taking Back Sunday?
Person A: Oh my god. You are so lame. Taking Back Sunday isn't cool.
Person B: ...
Person A: And are those Converse? Don't you know everyone wears Vans? You're such a poser.
Person B: *slits wrists in the bathroom*