Cum Taco Share definition Flag A taco in which you serve to someone while they're under the impression that the thick white stuff is sour cream, when its actually cum. "Tyler, do you want a cum taco?" Cum Taco by CrusadeToaster4 May 6, 2020 0 0 Get merch Get the Cum Taco mug. Buy Now — $32.95 See more merch