Numchuck butt Share definition Flag A name for someones ass that has been repeatedly penetrated or you think would enjoy having their ass penetrated. Yah she's hot, but you know she's freaky., I heard she has bigtime Numchuck butt Numchuck butt by migissa January 21, 2010 0 0 Get merch Get the Numchuck butt mug. Buy Now — $32.95 See more merch