Baboon Pants Share definition Flag Slacks that have the backside cut out thereby exposing the buttocks. Sometimes confused with assless chaps. Damn, my swamp ass is out of control! I’ve gotta pick up a pair of baboon pants. Baboon Pants by R_Chi_Bald March 18, 2018 0 0 Get merch Get the Baboon Pants mug. Buy Now — $32.95 See more merch