During an episode of liqui-shits, when a helpful friend plugs your erupting asshole with the trimmed leafy tops of spinach. Once they are good and poo painted, he or she then slaps you with them under the nose creating a mustache like smear.
It is a traditional Homosexual Witchcraft spell meant to restore fecal solidity.
"Dude I could not stop spraying the anal fire hose last night, but Anne remembered the good old Dutch Spanch Sanchez... about 10 minutes later I was good to go!"
Olsy-Sanchez: when one saves his poop in anticipation of coitus, and after said coitus, he takes his own poop and draws a poop mustache on his lover (male or female). Or, alternatively, when a man requests his female partner wear what is commonly known as a "strap-on", and said female uses the "strap-on" to enter her male subject anally. And after consummation, the male subject locates the strap-on, which has now been removed from the female, and he uses the poopy end of the strap-on to draw a mustache on the female. Olsy Sanchez