A proclamation that holds some urgency, thereby allowing you to quickly get out of a situation. It also lets the individual that the proclamation is stated to know that you won't be back anytime soon.
Florence: Have you seen my pictures from our vacation? We took something like 500 pictures.
Ethel: I GOTTA TAKE A SHIT!!!!!
Florence: Well then I guess maybe next time.
What one says while they are running towards the bathroom. Usually when the turtle is poking its head out and they are very close to having an accident in their pants.
*At the Office*
Don: Yah Bruce this weekend I took the family to-"
Tommy: "I GOTTA TAKE A SHIIIIIIIIIIT" (as he runs past the water cooler down the hallway to the bathrooms)
Don: "-to, ah, man.... i hope that Tommy gets to the bathroom in time."