Flappy Cooter Share definition Flag When a womans inner vaginal lips grow to preposterous size, their weight causes them to hang down and "flap" around. Grandma's so old gravity has given here a case of Flappy Cooter Flappy Cooter by TastesLikeDeadBaby November 26, 2003 0 0 Get merch Get the Flappy Cooter mug. Buy Now — $32.95 See more merch