Definitions by assrammers
grand canyon ass
Her grand canyon ass was so big and wide, when I tried to hit it from behind, it sucked me in like a black hole
grand canyon ass by assrammers August 20, 2008
waterfall ass
droopy, saggy, flabby ass that looks like it might spill out all over the floor once the dam holding it up is removed (i.e., pants)
I thought that girl over there in the bikini was hot, but when she turned around, her waterfall ass was so bad, I thought I was looking at Niagara falls!
waterfall ass by assrammers August 20, 2008