buttery nutsack Share definition Flag A delicious shot made up of 1 part tequila, 1.5 parts of amaretto and 1.5 parts of butterscotch schnapps. Last night we were downing buttery nutsacks until we couldn't see tsraight. buttery nutsack by rays11fan June 22, 2010 0 0 Get merch Get the buttery nutsack mug. Buy Now — $32.95 See more merch