flop smack Share definition Flag when you take off your flip flop and smack somebody in the face with it shelby: daniel is soooo annoying.ritchie: then just take off your shoe and flop smack him :D flop smack by xXturndaxgurlXx June 5, 2010 0 0 Get merch Get the flop smack mug. Buy Now — $32.95 See more merch