diarrea buddy Share definition Flag When you and your friends have diarrea and shit on the floor, and use it to make a snowman "oh my gosh, why does it smell like there's a diarrea buddy out of the toilet?" "I was bored" diarrea buddy by Cuddle Cheek May 13, 2009 0 0 Get merch Get the diarrea buddy mug. Buy Now — $32.95 See more merch