A bottlenecker 

While smoking Marijuana communally among a group, a bottlenecker is an individual, when passed, keeps smoking the joint/spliff much longer than they should resulting in others frequently reminding them to pass the joint/spliff to the next recipient.

The individual effectively creates a bottle neck in the flow of weed being consumed within the group.

Dude you've become a bottlenecker these days - you never pass the spliff!

A bottlenecker by howiquitweed November 2, 2011

Bottlenecker 

Is the derogatory name for people who fail to evolve to their respective society in a functioning way. The word was coined from an observation of sociopolitical evolution (or the lack thereof) pertaining to psychographic groups in America most likely to be arrested or suffer from perceived systemic oppression. The term "bottlenecker" can apply to anyone; though, it's most commonly associated with black people who are trapped in an evolutionarily psychological prison who use "systemic oppression" as an excuse for their cultural failures. Instead, there is the viewpoint of a socially evolutionary "bottleneck" pertaining to blacks who can't make it on their own in western civilization, in contrast with those who can.

Also known more pejoratively as "bottlenigger" when speaking specifically about blacks.

If you're black, pro-black, and a supporter of Black Lives Matter, you are nothing more than a bottlenecker to me.

Bottlenecker by VannokenSven May 31, 2020