An individual who purchases bulk quantities of marijuana and is liberal in his sharing. A Weed communist is often repaid in cigarettes, lifts to 24/7 fast food outlets (where an individual who has benefited from the weed communist's generosity will buy his meal) and by the labour of his subjects (rehydration of the bong, rolling of joints ect). A weed communist also has right to determine smoking order, venue (often close to the weed communist's residence) and concentration of marijuana within the mix.
Daniel: Hey man wanna get high tonight?
Jack: Yeah, love to man but im broke at the moment.
Daniel: No worries dude, its on me.
Jack: Thanks heaps man, you're such a weed communist.