It's when u take a shit in a vagina then bang her therefore making a muddy slide down both of you.
Haha dude I totally gave my chick a mud slide last night!

Was it warm?

Hell ya dude it was awesome!
by The chosen one # 2 June 21, 2009

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Right after sex, take a shit on a girl's chest and cum on your shit. Then you watch your cum-shit go down her chest!
She really likes when i give her a mudslide
by Mudslide experts April 23, 2008

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A pancake ass that sags to the point where it appears fat.
I heard you talkin' 'bout my ass back there! Which one a'you said it was a mudslide?
by Robert GP November 19, 2007

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When a person has explosive diarrhea which is used as lubricant for a session of anal sex (aka. ass fuck)
I poured a bunch of laxatives into her coffe without her knowing and that night we had a mud slide.
by OSUDamian October 03, 2006

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The real definition of a mudslide is= when you fuck a chick in the ass, and then pee in her butt, creating a mudslide, because when she gets up after that, the shit and piss all slides down her leg.
I hear California has lots of mudslides.
by RapscallionATX July 13, 2006

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When u anal fuck a chick while she diarreas all over your cock
by yanzo June 05, 2003

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when someone defacates on anothers head or body and urinates on said defacation to create an effect of a mudslide down ones person.
dude i was with this german chick last night, and she wanted me to shit on her face, then piss on it! total mudslide!! nasty!!
by greasy monkey February 12, 2011

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