While having diarrhea, you take a shit on someone's chest (preferably a female so the breasts are utilized as a canal) and then the person stands up. Allowing the runny defecate to act as a mudslide, running down the torso.
I was on a cheap domestic beer binge and your mom let me demonstrate a Bavarian Mudslide on her for the party entertainment.
Much like the Dirty Sanchez but instead of sticking your fingers in her ass, u stick your fingers in your own ass and wipe it under her nose.
I got drunk with your mom and I gave her the Ole "Filthy Sanchez"!
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