Rnub Ass Share definition Flag Its when someone says that they have a thick ass and a random thirsty girl hears that and starts to want that ass really badly Guy: I think i have a thick ass Girl:GIMME THAT ASS Me: Lol a Rnub Ass Rnub Ass by Chinese Walmart February 28, 2017 0 0 Get merch Get the Rnub Ass mug. Buy Now — $32.95 See more merch