Waterbed Ass Share definition Flag An ass, that resembles a waterbed when slapped. For example jiggles and ripples and does not resemble a quality ass. Did you see the ripples on that waterbed ass? I would never tap an ass like that. Waterbed Ass by Chadgini June 28, 2012 0 0 Get merch Get the Waterbed Ass mug. Buy Now — $32.95 See more merch