morning doo Share definition Flag The pinnacle of poop timing. Taking a dump when you wake up and before you shower, allowing for a clean ass crack all day long. Got outta bed and dropped a morning doo. Today is gonna be AHHHH-mazing. morning doo by one 'f' Jeph March 28, 2017 0 0 Get merch Get the morning doo mug. Buy Now — $32.95 See more merch