butt porridge Share definition Flag Defecation or feces that resembles a bowl of porridge. Soupy, yet thick consistency, in a very dark brown color. John just made Goldilocks her lunch in the toilet. He's serving up a huge bowl of Butt Porridge. butt porridge by Junkboyy December 21, 2008 0 0 Get merch Get the butt porridge mug. Buy Now — $32.95 See more merch