Cuflumpastain Share definition Flag Is the stain that remains after using a hand full of feces to masturbate with. Ah for fucks sake Luke, you've left cuflumpastain's all over the loungeroom again.Luke is a cuflumpastain. Cuflumpastain by Ahab-Hubbs July 28, 2016 0 0 Get merch Get the Cuflumpastain mug. Buy Now — $32.95 See more merch