The Flop Share definition Flag The Flop is the penis coming out of the slacks or trousers. You have till 5 o'Clock to make with the Zip, the Flop, the Splash and the Boo-Hoo The Flop by FlopFerDays April 29, 2014 0 0 Get merch Get the The Flop mug. Buy Now — $32.95 See more merch