Harley Douchebag Share definition Flag A guy who thinks that just because he's bought a Harley, it makes him cool and tough. Frank is a cool guy until he gets around his Harley, then he turns into a right Harley Douchebag. Harley Douchebag by Ljamc May 18, 2012 0 0 Get merch Get the Harley Douchebag mug. Buy Now — $32.95 See more merch