Bogart

[Sarah]

v. To hog something which is supposed to be shared, [word]e.g.[/word], a [word]bone[/word] or [word]controller[/word].
n. A person who bogarts
n. The act of [word]bogarting[/word].

[Britney]

Verb. To selfishly hold on to something. Jocular usage heard amongst smokers of marijuana.

[Jessica]

Humphrey Bogart smoked all those cigarettes. He died from lung cancer. When you hang onto a joint and let it burn without sharing, you look like Bogart with his perennial smoke dangling from his lips. The term had no popularity until it became a hit song in the 1970s.

[Jessica]

To hog; to take something considered common property and not share with others

[Tanya Shivari]

To selfishly control something, refuse to share.

[Sonia]

To use up/hold on to something long after your share is consumed/turn is over. Alternatively, to take control away from the person whose turn it is.

[Justin Bieber]

The traditional slang definition of Bogart:
To hold on to a joint too long without passing it on. Comes from the fact that Humphrey Bogart used to smoke like a train in his movies. So the person holding on to the joint too long is said to be bogarting it.
Other people may use this word for other purposes nowadays, but this is the traditional slang definition. Its use in this context was probably first documented in popular culture in the 1968 song Dont Bogart Me by The Fraternity of Man, featured in the Easy Rider soundtrack

[PussyCat]

To keep for oneself, to hog or not share.

[Becky]

The term Bogart as it has been defined here only exemplifies part of the meaning. It has nothing to do specifically with hogging a joint or smoking in general.
It is a VERB describing an act of boldness and fearlessness as was exhibited by Bogart in most of his film roles.
You Bogart your way into your boss office when you dont care what the secretary says. You Bogart your way into traffic when no one will let you into your lane and you Bogart a joint when you could care less that anyone else is waiting for a hit.
This is the real origin of the term, Dont Bogart that joint.

[Luis Fok]

Selfishly appropriate or keep (something, especially a cannabis cigarette)

[Marquetta]

To keep a [spliff] to oneself to oneself, especially while hanging from your mouth. From actor [Humphrey Bogarts] [trademark] cigarettes, held in lips or hand, but rarely actually smoked.