G-Banger Share definition Flag Australian slang for G-String bikinis worn by hot beach babes. A bloke gasps to his mate: Check out the G-Banger on that hot blonde bending over in front of me! G-Banger by Bloke Mate March 15, 2012 0 0 Get merch Get the G-Banger mug. Buy Now — $32.95 See more merch