dumb monkey Share definition Flag A stupid primate who swings from trees, shoves berries up his butt, and flings his poop at people. AAAAAAAAHHHHHHHHHHHHHHHHH!! the dumb monkey bit my nipple off! dumb monkey by Shawn B. June 4, 2003 0 0 Get merch Get the dumb monkey mug. Buy Now — $32.95 See more merch