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14.
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.
by Stonewall June 13, 2005
 
1.
You guys are wrong, its when a man and a woman engage in anal sex, then the man takes his penis and rubs it on the girls upper lip leaving a moustache.
After having anal sex, the man gave the woman a dirty sanchez.
by H. Carl August 20, 2003
 
2.
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.
by UnclePete123 February 27, 2006
 
3.
after having anal sex, the man pulls out his penis and wipes it across his partners lip, forming an authentic looking mexican moustache.
he gave her a dirty sanchez and she never had anal sex again.
by frappe August 04, 2005
 
4.
It does not matter how you do it. It's a Fecal Mustache.
Jane likes to give head, but Dick likes to give a Dirty Sanchez.
by S.D.S March 20, 2006
 
5.
The term 'dirty sanchez' originated in the porn industry, particularly films involving ass-to-mouth (atm) action. It describes the (originally unintentional, i.e. blooper) act of leaving a shit moustache on a partner's face by taking your cock out of her ass and putting it in her mouth without wiping it off first. The result is that as the dick is thrust between the lips, shit is scraped off and comes to rest on her upper lip in a moustache configuration.

Anyone who thinks it involves the deliberate wiping of shit with fingers on a partner's face is a know-nothing fucktard.
Please disregard the numerous fucktard definitions of 'dirty sanchez' that were previously recorded.
by Figleaf23 October 05, 2007
 
6.
An act characterized by the fingering of the ass and the giving of a "thin shit moustache." Not to be confused with the dirty rodruigez.
I was bangin' her ass and then I decided it would be a great idea to give her a dirty sanchez.
by dirty_bird November 20, 2006
 
7.
Doing a chick, best when doggy style, and at some point during the act of sex...sticking your finger(s) in her ass, and then rubbing that finger(s) on her upper lip, thus giving her a fecal mustache.
"That bitch got pissed when I gave her a dirty sanchez"
by Tommy PWT October 26, 2006