Poo bum egg Share definition Flag When someone says something really mean, so you respond with a mad comeback Nibba 1: you stink like a plum Nibba 2: poo bum egg Nibba 1: *cries is Mandarin Chinese* Poo bum egg by Eggsforbreakfastlol December 5, 2019 0 0 Get merch Get the Poo bum egg mug. Buy Now — $32.95 See more merch