Definition of "poseur" from the Merriam-Webster dictionary: "a person who pretends to be what he or she is not: an affected or insincere person"
BillyG wrote: Poseur (or poser) is a pejorative term, often used in the punk http://en.wikipedia.org/wiki/Punk_subculture, heavy metal http://en.wikipedia.org/wiki/Heavy_metal_subculture, hip hop http://en.wikipedia.org/wiki/Hip_hop, and goth http://en.wikipedia.org/wiki/Goth_subculture subcultures http://en.wikipedia.org/wiki/Subculture, or the skateboarding http://en.wikipedia.org/wiki/Skateboarding and surfing http://en.wikipedia.org/wiki/Surfing communities, to describe a person who copies the dress, speech, and/or mannerisms of a group or subculture, generally for attaining acceptability within the group or for popularity among various other groups, yet who is deemed not to share or understand the values or philosophy of the subculture. Wiki (already posted?)