Guinness Stout Gut Spout

An awful form of the beer shits caused by drinking Guinness Stout the evening prior, in which the sphincter acts as a spigot which, when opened, empties the contents of one's innards into a toilet bowl. The diarrhea is generally black, served at room temperature, and has a nice, frothy head.

Man, I double-poured a pint of Guinness Stout Gut Spout into the toilet this morning; it was not good.

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