Peanut butter shit Share definition Flag Diarrhea so fucking bad that it resembles peanut butter that has been thrown against the wall. I just took a gigantic peanut butter shit and it felt so good Peanut butter shit by Cactus wank August 19, 2016 0 0 Get merch Get the Peanut butter shit mug. Buy Now — $32.95 See more merch