Let A Monster Out Of Your Ass

The action of releasing a giant pile of fresh caca, like, the warmest smelliest largest pile of doodoo you've ever seen, even after wiping, you'll still get dirty pants.

Autumn: "DUDE HURRY UP I NEED TO TAKE A MASSIVE SHIT!"
Filip: "SHUT THE FUCK UP, I'M MAKING MOONSHINE IN MY BATHTUB, GO LET A MONSTER OUT OF YOUR ASS IN A HOLW OUTSIDE!"