The Goose bumps your bodey produces in the act of shitting or about to go shitting
God dammit steven i got shit bumps on my arm i might be shitting or about to go shitting.
The goosebumps that cover your entire body as you shiver and shake with the pains of severe diarrhea.
Dude: It's 95 degrees outside, why do you have goosebumps?
Dude 2: They aren't goosebumps man, it's the shit bumps. Goddamn baked beans!