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Essentially a Dirty Sanchez except instead of normal fecal matter, you use diarrhea to wipe above the lips so it runs down, also giving the person a goatee.
"Dude, I didn't know James had a moustache and a goatee."

"Well that's because we gave him a Slippery Sanchez in his sleep!"
by OMFGitsSquirting! January 30, 2009
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