Poser

One who adopts the stylistic and overall aesthetic traits of a group or movement, without actually considering the attitude, ideals and lifestyle of said group.

Guy 1: Well, I got my Suicidal Tendencies hat, Bad Brains T-shirt, Dickies work pants with studded belt, Vans Sk8 HIs and knee high socks. I'm officially a HARDCORE SKATER! WOOH!!!

Guy 2: Hey Dude, I noticed your gear man. Suicidal's one of my favorite bands man! I bet you must skate as well! Those Hi-tops are so good for vert, the waffle grip is amazing!

Guy 1: ...Aaaah, nah man I dont skate.

Guy 2: Oh ok, well what's your favorite Bad Brains song?

Guy 1: *bemused* I don't know dude, I've never actually listened to them before.

Guy 2: ...F**KING POSER!!!