Butt Numbies Share definition Flag The act of putting cocaine in ones inner rectum. Causeing numbness. I gave my cat a butt numby! or Butt Numbies are my cats favorite! Butt Numbies by Jayme B. Thompson October 8, 2011 0 0 Get merch Get the Butt Numbies mug. Buy Now — $32.95 See more merch