An act during a FMF threesome in which a male takes a shit down the girl's back so it runs down into the other girl's awaiting mouth.
by Westconenct January 26, 2011
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In Colorado, we drink REAL BEER, not Mississippi River Horse Piss
In Colorado, we drink REAL BEER, not Mississippi River Horse Piss
by F550 Powerstroke March 20, 2014
Get the mississippi river horse piss mug.When you have diarrhea and you shit down a girls boobs and it runs down to her puss and you eat her out
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