Where a person travelling between destinations (by car, public transport, or on foot) feels the extreme urgency to find a public toilet so they can stop and defecate before they soil themselves.

There is usually a two minute window to find a public toilet before ones underwear becomes a substitute.
Q: "Hey, why are you late?"
A: "Sorry. I had to make a shpit stop otherwise my pants would be full of it."
by Andrew2017 February 2, 2017
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