fat farts Share definition Flag The farting sound resulting from trapped air escaping from between the sweaty bellies of two fat people fucking. (aka- beef queef) That couple in the adjoining motel room kept me awake for over an hour with their fat farts. fat farts by wolfbait51 April 21, 2011 0 0 Get merch Get the fat farts mug. Buy Now — $32.95 See more merch