The real Doc Holliday (1851-1887) was a Georgia dentist who, after a long process with much history in between, became a badass of the western U.S. Most notably, Doc Holliday was responsible for the death of Tom McLaury and possibly others in the Gunfight "at" the O.K. Corral. He and Wyatt Earp, along with Earp's brothers Virgil and Morgan, engaged in a thirty second gunfight in Tombstone, Arizona on 10/26/1881. Three men, Tom McLaury, Frank McLaury, and Billy Clanton were killed. The Earps and Holliday left alive, but in ensuing events, Morgan Earp was shot dead, leading to a vendetta by Wyatt Earp. He was joined by Holliday and the two have become legends of the west.

Their story was featured in several movies, including:

Tombstone, Wyatt Earp, Gunfight at the O.K. Corral.

Holliday died of tuberculosis in Colorado in November, 1887.
Doc Holliday was the most badass gunfighter to ever enter the West.
by Holliday February 18, 2006
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Someone who enjoy's having sexual intercourse with doctor's.
Watch out for Liz, she's a Doc Knocker.
by Lizzy_Tish12 November 13, 2015
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A man born from Encinitas, a town in Southern California. Although his real name is unknown, he responds to sloppy, doc sloppy, or D. Slop. This particular individual is really bad at fortnite, and he is known for putting a strap-on on his head, and piping a stripper with it while making the noise of a rhinoceros, because his penis was too small to have sexual intercourse with.
Bruh, I just shit on doc sloppy in playgrounds. Probably cause he stayed up late making rhino noises
by FinnS726 September 18, 2018
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to have your team's offense completely and utterly paralyzed by Phillies pitching-phenom Harry Leroy "Doc" Halladay III. To strike out against Roy Halladay.
Fan 1: "Did you see Roy Halladay pitch his perfect game against the Marlins in May?"
Fan 2: "Hell yes! The Fish got doc blocked!"

or

Fan 1: "Holy fucking shit, Roy Halladay pitched a no hitter against the Cincinnati Reds in his first post-season appearance!"
Fan 2: "DOC BLOCKED!"
by abelard87 October 8, 2010
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Most people think a doctor has to be a person who helps sick people get better. That's the general idea, but some of them don't get people better. Maybe they are pushing the latest drug that they got free from a drug rep, and the drug is more dangerous than the sickness it's supposed to cure. Maybe they have been at the pop for so long that they can't even read a thermometer let alone their own case notes. Maybe they are religiously persuaded that sin causes some sickness and the sick people need Jesus. Who knows?

But they don't do their job. They are doodle docs.
Willy: I went into surgery and came out with half the surgeons' tools still inside me. Oh, sure, they took'em out. But I will never play the violin again.

Henrietta: Damn those doodle docs

Willy: But you should see my court settlement. I'm richer than the entire hospital staff.

Henrietta: Ah, dear, let me give you a hug.
by verbusaccidentibus August 7, 2010
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Someone who is very adept at arousing a penis to its fully erect form and then continuing to stimulate it to ejaculation. This definition is reserved for those who make penis stimulation an art form.
I went home with this girl from the bar last night. I had no idea she was such a cock doc!

or for homosexuals

I was at the club last night and saw that cock doc you slept with last weekend.
by josh summers March 19, 2007
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Halfway crook. Rapper that looses to B Rabbit in 8 Mile.
Papa Doc got owned by B Rabbit at the shelter
by bizzy j21 July 11, 2008
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