To freeze a piece of shit and roger your partner with it. As it melts the poo will slide down her/his legs.
When she awoke I told her that she had left a candy bar in her ass crack by mistake; I was ashamed to admit I had given her the Mississippi Mud Slide while she was sleeping.
by Reginald Titus September 11, 2003
by nate brookens February 18, 2008
The act of defecating into a person's mouth. The partner then proceeds to give oral sex while their mouth is still filled with feces.
by BCEagles7 February 01, 2009
Act of a man taking a shit on a womans chest then jizzing on top of the shit. The next step is to titty fuck the woman.
by Joc C January 06, 2010
Taking a crap on your partners face, then "sliding" back and forth smearing it into every crevasse. While wearing a sombrero.
by Japo Jones August 14, 2007
"Hey Billy" I fucked that bitch in the arse last nite while she was having diahrea, I was slipping & sliding all over the place just like the Okiepinokie mud slide.
by beasty boys from Campeche August 23, 2009
an act which enlists a group of posh, pretentious twats, who, usually, know each other from the villages' local cricket teams. Said twats get naked, and all do a shit on a long peice of heavy duty plastic which is laid out down the length of one's garden. They then proceed to take turns in running up to and sliding down the plastic, which by now is covered in shit.
posh twat 1: "oh Mortimer, do join us for a Mississippi Mud Slide on Saturday after cricket."
posh twat 2 (who we now know as 'Mortimer'):"That'd be just splendid if I didn't have an infected bock boil. I'll come along for the chinwag though"
posh twat 2 (who we now know as 'Mortimer'):"That'd be just splendid if I didn't have an infected bock boil. I'll come along for the chinwag though"
by el kizzle May 02, 2009