doo-doo-butter Share definition Flag another name for loose balls of poopy on your cheeks that can be smeared as like butter. I tried doo-doo-butter on my toast this morning and it tasted terrible. A bad idea. doo-doo-butter by sammuy October 12, 2006 0 0 Get merch Get the doo-doo-butter mug. Buy Now — $32.95 See more merch