Duffle Butt Share definition Flag When a woman's butt looks like a loosely packed duffle bag. I like big girls,but in those stretch pants her butt looks like a sack of marbles... That bitch got duffle Butt! Duffle Butt by M4nny420 November 17, 2013 0 0 Get merch Get the Duffle Butt mug. Buy Now — $32.95 See more merch