A person who's beliefs about music are only them of dubstep. All other genres are obsolete. He/she refuses to listen to anything else, this usually comes and goes as a phase.
Guy 1: HEY! Have you heard of the Canon Logic!?
Guy 2: No.
Guy 1: You should look them up.
Guy 2: Yeah whatever. *goes home and looks them up
Guy 1: So what did you think? Do you like them?
Guy 2: That shit was gay. Dubstep is SO much better.
Guy 1: Dubstep Nazi..
Guy 2: What?
Guy 1: Nothing.. nothing...