A Goth poser would be some one who wears entire black, heavy makeup, lots of peircings, anti social attitude, radical daily life and a fetish for metal and bondage.
A Gangster poser aka wigger/wankster/wanker/etc.. would be some one who wears increddibly baggy clothing, lots of bling, bandanas may be worn out of the back pocket, on the head or under an unalterd baseball cap with the tags left on, slang is also heavily used in this poser culture.
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?