The act of engaging in the doggy style position then fingering the female's anus while in that position and smearing a residue of her own shit accross her upper lip forming a mustache.
I would never kiss my girl right after a dirty sanchez!!!
by lanyc July 30, 2006
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When getting anal sex the man takes out his cock and puts it on the womans face.
After I had fuck this chick in her ass I gave her a major dirty sanchez.
by Isaiah Cruz April 25, 2007
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On the next Dirty Sanchez...

Pancho gets liposuction in his ass. They put the excess fat in a jar and Dan drinks it.
by Christian Felts March 3, 2008
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a disgusting thing when the guy puts a finger in the females ass and spreads the crap on the upper lip.
the worst thing ever!!!!!!
my ex-boyfriend gave me a dirty sanchez at a party and said he cleaned it off but he didn't so when we came out of the room every one laughed at me! : (
I guess i should wipe my ass better.
by Missperfect January 7, 2008
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When a man (or woman) has a thin mustache on his or her lip. You may see many Mexicans with Dirty Sanchez's
I got so mad at that bitch, I wanted to punch the dirty sanchez right off her face!

The 15 year old boy was being made fun of for his diry sanchez
by fredknockerjoebob July 11, 2009
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Immediately after concluding Anal sex with your partner, insert a finger of your choice into your partners Anus. After removing finger, reach around to the mouth area and wipe your finger directly above their lip, applying a "Dirty Sanchez" moustache.
Tom: Dude ... I think that slut I hooked up with last night be a man.
Johnson: What? What makes you say that?
Tom: I noticed a little hair on her lip.
Johnson: Are you serious?
Tom: No, but I totally gave her a full "Dirty Sanchez".
by BornAJuggalo December 7, 2008
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A dirty sanchez:
(1) what everyone else said apart from that noob who was jizzing in someones mouth.

(2) a truly awsome (or disgusting) show on MTV alot like jackass but so much better as the welsh acent makes it even funnier and they are so much more crazy they should have been commited.
(1). me: "dude i should my finger in this girls ass when i was pounding her doggy style lastnight an then wiped it on her lip."
Rob: "oh dude u gave her a dirty sanchez? thats wrong mate"

(2) "you live on the bus you get fucked up on the bus."
"this isn't fucking gay school ya know!!"
by hazmat man August 1, 2006
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