A Dirty Sanchez is when you
finger someone's ass, then pull the finger out and wipe it under their nose. Then they have a brown
moustache that looks like an unshaven Mexican's would (think David Villalpando from
Mask Of Zorro).
OK, look, I didn't invent the term, I didn't create the node, and I even didn't want to node it. But for the sake of the truth, and because this is Everything (not just Some-things), I added it.