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.
I had this threesome last night and i gave the girls a Mississippi River Runner.
by Westconenct January 26, 2011
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When you have diarrhea and you shit down a girls boobs and it runs down to her puss and you eat her out
I gotta make sure I eat Taco Bell before I give my girl a Mississippi mud river
by Kriknebrok98 December 19, 2016
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When you take a naked girl and pour a liquid from her boobs to her vagina and drink it
Friend:hey can you hang out
Me:no I can’t I’m about to give my girl the Mississippi River
by Bigboydirtydan69 May 30, 2018
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When you take a naked girl and pour any liquid from her boobs to her vigina and drink it
Hey I can’t hang out ima give my girl the Mississippi River
by Bigboydirtydan69 May 30, 2018
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