XCF Share definition Flag Wanna be ganger. Pathetic, weak, dumb, boring, idiotic. Someone who wishes he was a ganger. He talks like a complete fucking moron, "fuccin yo g homie". anyone who talks this way is an idiot or "XCF". XCF by The Dark Ride October 23, 2003 0 0 Get merch Get the XCF mug. Buy Now — $32.95 See more merch