snap a yam Share definition Flag to take a dump, blurt some brown puppies, pinch a deuce, drop the kids off at the pool - i.e. to defecate. Dude my stomach is cramping, I'm gonna go snap a yam. snap a yam by gride January 2, 2008 0 0 Get merch Get the snap a yam mug. Buy Now — $32.95 See more merch