When you are in a 69 with a chick and she let's go and shits on your face.
I was in a 69 with my girl last night and the bitch pulled a California Mudslide on me.
by AssAttack March 24, 2015
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Its when you are prairie doggin it and you are about 98% sure that its diarrhea.
I was cali mudslidin' like a beast for an hour yesterday and had to go home early from work.

Damn bro- I've never had a California Mudslide happen to me at work, but it did happen one time in an elevator.
by Chaz V November 29, 2011
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When a woman gets on her knees and angles herself to where her head is up higher than her butt. A man with diarrhea shall go to the top of her body just below her head, and poop out his fecal matter onto her back. As it slides down her back and off her butt cheeks, it look's like a California mudslide.
Man, John sure did give Cassie a big California mudslide last night in the bathroom at AJ's party.
by WhoFlungCum November 25, 2009
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In sexual intercoarse when a man shits on a womans forhead and she lets it run down her breasts
'Ah Jamies tits are so nice I'd love to california mudslide that shit"
by will harriott July 2, 2008
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The process which involves engaging in anal sex, and your female partner defficates on your penis, you then proceed to insert the penis in the vagina with long hard thrusts getting all the feces off the penis and into the vagina. Next, you get a standard size Turkey Baster and proceed to insert 4 to 6 cups of water into the shit filled vagina, shake your female partner around while holding the labia together and then finally have your female partner squat all over your head spewing out shit and water on your face resembling a California Mudslide!!!
I was bored one night so I let my girlfriend hook me up with the California Mudslide. I went to work without showering!
by Spasa Jovanovich December 7, 2007
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A Cleveland Steamer, but with diarrhea.
A Cleveland Steamer is where a person takes a dump on your chest, during sexual foreplay. The chocolatey goodness makes it look like mud sliding down your chest/body.
She died during a California Mudslide.
by Yager May 25, 2008
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