Janga Hookup

Someone who knows where the weed is, and can assist you in getting some.
Or someone who provides you with it.

Guy #1: Mang, dude. I got that Janga Hookup.
Guy #2: FUCK YEAH!

or

Girl #1: Dude. Do you have the Janga Hookup?
Girl #2: Nah Dude.

Girl #1: Shit.