F.U.N.! (Fuckin' Uber Nice!) Share definition Flag Something you say when you're having a fuckin' great time! F.U.N.! (Fuckin' Uber Nice!) F.U.N.! (Fuckin' Uber Nice!) by Static Spike September 28, 2009 0 0 Get merch Get the F.U.N.! (Fuckin' Uber Nice!) mug. Buy Now — $32.95 See more merch