ass splatter Share definition Flag The spray painting of one's bowels on the backside of a toilet bowl and underside of toilet seat. Man, I went to the public restroom and there was some serious ass splatter on the toilet. So I took a piss instead. ass splatter by piratemaxx February 15, 2009 0 0 Get merch Get the ass splatter mug. Buy Now — $32.95 See more merch