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 sockwill splatter on said large person.
"My little brother totally tried to Dirty David my dad when he took his phone away last night!"
When a guy wearing a yellow poncho is dying right in front of you and the only thing you can do to save him is give him a rim job.
I was walking down that back alley and I saw the lights going out in this piss stained tramps eyes. I couldn’t see a defibrillator so I rushed over and gave him a Dirty David, perked him up right away.
A male that does not properly clean the head of his penis or his foreskin causing a small fungi to grow. The fungi looks like peppercorn at first but then quickly covers the head of the penis. It is black and cracked up like the grand canyon. If you look beneath each crack you could see the pinkish color that is the inner meat of the penis.
Man, my uncle Tomas showed me his penis at church today...my uncle is a real Dirty David!