Night Poo Share definition Flag When you really need a poo when everyone in the house is sleeping, and after defecating you don't dare flush the toilet in fear of waking everyone up. *FLUSHES* "Hey, wtf man; flush it in the morning" "Sorry dude, it was a banging night poo" Night Poo by Robell93 May 11, 2010 0 0 Get merch Get the Night Poo mug. Buy Now — $32.95 See more merch