fight the fuck on Share definition Flag A play on USC's "fight on," it denotes that you are really excited (or really drunk) for Trojan football. The Trojans are winning today. "Fight the fuck on!" #FTFO fight the fuck on by USCgal November 30, 2013 0 0 Get merch Get the fight the fuck on mug. Buy Now — $32.95 See more merch
