When Doing a Girl doggy style you insert both of your index fingers into her asshole then pull them out lean into her and proceed to smear a handle bar style mustache on her upper lip. Òle.
My girlfriend and I got fucked up on margaritas and started doing it doggy style I felt in the spirit and gave her a dirty Sanchez to finish the night
when you insert something in their tight chocolate doughnut but they shit a little so you take it out and bob ross an authentic mexican mustache across their upper lip.
"OMG Sarah is such a slut, she gave a dirty sanchez to her boyfriend and licked it off"
"that night with jeff was awesome I didn't tell him I get turned on by poo and yet he still gave me a dirty sanchez"
When you hit it from behind and unknowingly drift the shutter. The surprised shock the moment when you pull out is " the dirty sanchez".... Come to find out