Jedi Toke
When the marijuana joint has become so small, you have to inhale (take a toke) without it touching your lips so that it doesn't burn you. This is an advanced level of smoking weed hence the comparison to a Jedi.
Person 1: Mate theres not much left of the doob, you might as well put it out.
Person 2: Nah no worries there's still a bit left, Ill just Jedi Toke it
Person 2: Nah no worries there's still a bit left, Ill just Jedi Toke it