crapfart Share definition Flag When a person intends to pass gas but ends up with a bit of stink in his or her pants. Person 1: Hey, why did you run out of class today?Person 2: It was so embarrassing, I had a crapfart. crapfart by 4doxyr March 7, 2017 0 0 Get merch Get the crapfart mug. Buy Now — $32.95 See more merch