The act of excessive masturbation without any lubrication until your penis is very swollen the Night before a big date to give the illusion that you’re cock is thicker than it actually is.
“Hey man. Are you ready for your big date later today?” Oh yeah. I did the ol’ Dirty Davey last night. I can’t wait to see the look on her face.
a technique usually employed during the rear entry sexual position in which a man places his finger in his own ass and then rubs his finger along the upper lip of his unsuspecting partner; variant of the Dirty Sanchez
Yo dude, I gave Lindsay a Dirty Davis last night and the mamma went buck wild. She was a mad ride
the act of defecating into a tube sock, and slinging it around, releasing it in the direction of a large person, as in the biblical story of David and Goliath. If properly executed, the dump-filled sock will splatter on said large person.
"My little brother totally tried to Dirty David my dad when he took his phone away last night!"
Having naughty thoughts about someone you work with that are so intense, you can't help but play the skin-flute at your cubicle while your surrounding cubicle mates are out to lunch.