e.g: Burberry, Bling, casual sex and associated low morals, Little Britain the list goes on.
The word is pretty much always used in a negative sense by non-chavs, as to them the thing in question is undesirable.
Guy 2: Nike? It's a bit chavvy isn't it?
Guy 1: Oh yeah, suppose so *puts down trainer in disgust*
dragged up by parents who are just as bad.
an absolute joke they should all be erased permanently!
made of steal!!(NOT) complete gobshites