Gunna fritz

Gunna fritz (noun) - The defacated remains of food, otherwise known as poo.
Originating from the legendary film star Gunnar Fritz Stansson.

Example 1:
Billy: Fortnite?
Ryan: Ye boi
Billy: Alright invite me to party
Ryan: Yeah 2 secs just doing a gunna fritz

Example 2:
Josh: You guys are sooo bad at this game.
Jared: Josh you are such a gunna fritz.