Noun; A boss battle in Nintendo 64 game "Conker's Bad Fur Day" He is a giant pile of poop that sings opera while throwing feces at the game's protagonist, a squirrel named Conker. He is defeated when Conker throws enough toilet paper in his mouth. The Great Mighty Poo loves to eat sweet corn.
The Great Mighty Poo "I am the great and mighty poo, and I'm going to throw my shit at you"
He is the reason you don't eat to much McDonald's. Because your poop will become alive.