Ass-Off Share definition Flag N. A battle of butts to see whose ass is the greatest. N. A pageant of sorts that focuses on the ass primarily. Evan: Yo JJ, you and Donnie should definitely have an ass-off. Ass-Off by Big Saxy July 26, 2017 0 0 Get merch Get the Ass-Off mug. Buy Now — $32.95 See more merch