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
Get the Mississippi River Runnermug. Budweiser beer. The king of fag beers
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 pissmug. When you have diarrhea and you shit down a girls boobs and it runs down to her puss and you eat her out
by Kriknebrok98 December 18, 2016
Get the mississippi mud rivermug. by frellepolo October 9, 2019
Get the Mississippi Long Rivermug. by KaiTheCrusader June 24, 2022
Get the Mississippi River Peemug. by Bigboydirtydan69 June 11, 2018
Get the The Mississippi rivermug. by Bigboydirtydan69 June 11, 2018
Get the The Mississippi rivermug.