NO, a Dirty Sanchez is performed when a male fingers a female's ass and wipes the reminants on the female's upper lip. What you referred to below, when a male inserts his penis in a female's ass then transfers the fecal matter from his penis to the female's upper lip is the Dirty Rodruigez, the first cousin of the Dirty Sanchez. Don't feel bad though, they are commonly confused.

The man's index finger was smelly after administering a dirty sanchez.
ayon kay nickel poo turnip ika-27 ng Setyembre, 2006
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
ayon kay drewbe ika-26 ng Setyembre, 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.
ayon kay gruby21 ika-02 ng Agosto, 2006
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!!!
ayon kay lanyc ika-30 ng Hulyo, 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.
ayon kay Justin Stephen ika-06 ng Mayo, 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!
ayon kay sugarnips ika-09 ng Abril, 2006
As defined by Kelly Osbourne on the Howard Stern Show, who is an authority on vulgarity coming from the Osbourne family...Dirty Sanchez is a non-sexual practical joke where the offender inserts their index finger into their vagina or butthole then swipes it across the victims upper lip.
My mom was being a bitch so I sneaked up and gave her a Dirty Sanchez.
ayon kay Stonewall ika-13 ng Hunyo, 2005

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