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 "Don't Bogart Me" by The Fraternity of Man, featured in the "Easy Rider" soundtrack

In the late 70s, early 80s, "Bogarting" was to take an extra toke off a joint that was being passed around. This usually occurred when three or more people would "Partake" and the person(s), in the middle (the passer), would "Bogart" a hit.

Its origin is obviously from legendary actor, Humphrey Bogart's' notable "over indulgence" for smoking cigars.

The act of hogging the marijuana delivery device.

the act of hogging something to the point of annoyance

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

(Verb transitive form of bogart see bogart. This is the form used for an action in progress. When someone is committing a bogart.

To hold onto something for too long when you are supposed to pass it on.