a poser is someone who is tryhard and trys to be something they arn't!! For example when somebody hears a song on the radio for instand i write sins not tragedies by panic at the disco and starts saying OH I LOVE PANIC AT THE DISCO i say whats your favourite song they say oh i write sins not tragedies!!! that is soo poser like...they are trying to be like veryone else they have no idea what there other songs are but decide they love them cause ov there mainstream song on the radio!!!
POSER:oh AFI is my FAVOURITE band right now!!
NON POSER(someone whoes been long time fan)whats your favourite song?
POSER: oh miss murder
NON POSER: DUH its the only freakin one on the radio!!!