An inhabitant of Mystic CT, that only stays at the trendy coffeeshop The Green Marble. Their activities include smoking marijuana, longboarding, listening to obscure music, looking hip, and hating absolutely everyone that isn't one of them. Often known to complain about the government and scene kids. Also see hipster.
Rob: Hey dude, can we bring Steve to hang out with us tomorrow?
Tim: No way, man, he's a Marblefag. He'll just smoke Marlboro Reds, rant about George Bush being Satan and make us listen to Reel Big Fish the whole time.