when you fuck a chick and then stick your thumb up her ass and smear the shit on someone's upper lip either yours or hers
guy one: i gave that bitch a dirty sanchez last night
guy two: who wore the shit
guy one: her this time
by drewbe September 26, 2006
America's favorite sex act. We are all familiar with it because of all the jokes and humourous references to it we encounter on a daily basis... although no one has actually done it.
Dirty Sanchez is our favorite sex act... that no one has actually performed.
by gruby21 August 02, 2006
A time honored event in which, while laying the bone doggy-style, you insert two fingers deep into the girl’s starfish. Pull it out, then reach around and wipe the residue across her upper lip, leaving her a thin, shit mustache. Making her resemble someone who would be called Dirty Sanchez.
Last night, after leaving the bar, I met this lil slut outside and dirty sanchez'd her in the back of the limo.
by PoloSportCondoms.com June 07, 2005
1. when one lover smears fecal matter onto the others upper lip (whether it by by way of dick or finger), creating the illusion he has a mustache similar to the mustache your gardener, enrique, grew when he was eight.

2. a theory for what the "that" that meatloaf references in the song where he says hed do anything for love (the other being an alaskan pipeline)

3. an event that occurred in dustin diamonds sex tape. the only time in his life taht he was better than meatloaf.
elsa: damn, look at pedros mustache
luis: no mang, thats no mustache, thats his feces mang.
elsa: DAYUM! he betta wash dat dirty sanchez off

groupie: hey baby, can you rub my poo all over my face?
*meatloaf spontaneously bursts out into song*
groupie: i was wondering what the "that" was
meatloaf: yea, i cant decide if i wrote it about a dirty sanchez or an alaskan pipeline, either way, youre nasty

dustin diamond: wow, im such a loser, my career is dead. im gonna go smear my shit on some chicks face, that will help me!
by DËWadïct March 22, 2008
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
A dirty sanchez occurs when a male places both pinky fingers together and inserts them into the female anal cavity. Once the pinkies have been removed, ass pounding ensues and a reach around occurs. Any fecal remnants are smudged above the upper lip which creates a mustache of sorts.
Since my lady friend is such a big fan of anal sex I felt it would be a great idea to give her a dirty sanchez.
by Justin Stephen May 06, 2006
(N) when you stick your finger in your partners ass and then rub your finger on her upper lip
Bonnie was mad at me when I gave her a dirty sanchez!
by sugarnips April 09, 2006

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