FagFart Share definition Flag A wet, loud, cum filled and/or blood filled fart. Imparted to one male by another male. Can be during or after homosexual sex. Fred's underwear was stained red and stuck to his ass after he FagFarted. FagFart by Vapour Trailing April 25, 2006 0 0 Get merch Get the FagFart mug. Buy Now — $32.95 See more merch