Ass Whiff Share definition Flag The smell of a dirty ass that may have been marinating in not being washed for a few days. Usually hot and sour stinky and not associated with a fresh fart. Dude left some serious "ass whiff" in the air after he got out of his class seat. Ass Whiff by Cobalt62 June 26, 2009 0 0 Get merch Get the Ass Whiff mug. Buy Now — $32.95 See more merch