The sudden wave of attack from a future shit that is often accompanied by intestinal pains and groaning, causing the victim to cease movement and crouch down in agony. A massive shitgenerally follows. Also known as a PK.
A monster that slithers down the chimney on Christmas Eve to disembowel children in their sleep and dine on their intestines. Sometimes it will stuff a child or two into a sack and save them later for a snack.