Pooster Share definition Flag a cross between a pig and a rooster that likes sugar cookies person 1: "look at that bitch ass pooster eating sugar cookies" person 2: "damn what a dumb ass" Pooster by I'mnothornyIjustwantattention March 31, 2020 0 0 Get merch Get the Pooster mug. Buy Now — $32.95 See more merch