poopopoptomus Share definition Flag The worse kind of poop, when it's so huge that you have to clamp your anus apart and use chopsticks to pull it out. I had to call my friend Matt over to assist me in getting the poopopoptomus out poopopoptomus by bum killa 101 April 17, 2009 0 0 Get merch Get the poopopoptomus mug. Buy Now — $32.95 See more merch