1: Someone who tries to be something they're not. Ex. A goth who pretends to be a punk or vice-versa.
2: A shitty label for a band such as Good Charlotte. People who use this word on "poser-punk" bands have no idea that they are not posers, and even if they were, who cares? Being a poser has nothing to do with music. Real posers are singers/bands that claims to be something else.
3: A puzzling question.
not a poser = Blink-182, Good Charlotte, Simple Plan
I listen to and enjoy ALL of the bands I just mentioned. Even the posers.
Todd:have you heard american idiot?Thats the bestest song ever!
Bill:Have u even heard any other green day songs?
Todd:what other green day songs?