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
A internet persona and IRC whore comparable to God himself. A self proclaimed closet geek known for his class, style and amazing good looks.
Doc Holliday makes my pants kersplode with joy.

Doc Holliday is better than you.
by Anonymous November 4, 2003
When a man takes his spouse on a train ride, ties her up and gags her, and kicks her off the train into a field of angry buffalo while firing a pair of six shooters into the air.
I totally gave that bitch the ol' Doc Holliday. I just wish I was there to see that trampled skank after the buffalo were finished with her.
by Vulch5 September 16, 2015
While wearing a western gun belt, cowboy boots and a cowboy hat during anal sex just as you are about to cum you say a doc Holliday line from the movie tombstone and then donkeypunch the lady with a toy pistol.
I did the doc Holliday last night to this chick I just met
by Splinter14 November 4, 2014
A "Doc Holliday Cough" is the unsettling, abrupt and ill-sounding cough produced by an ostensibly healthy individual. Doc Holliday, the sharp shooting associate of Dodge City lawman Wyatt Earp, was known to have terminal tuberculosis and in film is often portrayed as being wracked by fits of coughing.

A "Doc Holliday Cough" is a cough that, without any other evidence or observation, imparts a sense of illness or poor health.
The girl who sat next to me on the bus had a Doc Holliday cough so I made sure to wash my hands a lot and change my clothes when I got home.
by loobeydoobey March 23, 2010