weenus belly Share definition Flag A very flabby belly such that when you bend over the flab folds show distinctive cellulite under the skin. That chick may have a hot face, but damn, look at the weenus belly she sports. weenus belly by FishboyfromAtlanta November 14, 2014 0 0 Get merch Get the weenus belly mug. Buy Now — $32.95 See more merch