quafebutter Share definition Flag the milky-brown, viscous liquid that oozes out the anus after good, German buttsex. "Lionel totally got quafebutter all over him when he withdrew and Marvin farted." quafebutter by MattBerg November 15, 2007 0 0 Get merch Get the quafebutter mug. Buy Now — $32.95 See more merch