Code for having a smoking session with someone.
Guy: hey you wanna go to the skate park
Stoner: nah I have an appointment with dr greenthumb
One of the biggest stoners going, known legandary for his fat blunts (marijuana filled cigars) and joints (if you dont know what a joint is is you should not be reading this) ,he also likes to drink straight Vodka as soon as he wakes up, this, along with the practice of "Wake and Bake", accounts for his breakfast, which is of course; the most important meal of the day, by 12 noon, he is mighty stoned, he then rolls another blunt and goes on a Stoner Mission to where ever the day takes him (possible inspiration for a stoner film).
(Please note that Cypress Hill would be playing in the background)
Me: "Roll another Blunt"
Dr Greenthumb: "Okay, but i wont use that much weed"
(A few moments and grams of weed later)
Me: "Thats a FAT Blunt, Light it up"
Dr Greenthumb: "Thats some BAAAADDDDDDD WEEEEEEEEDDD"
(Bad meaning good, of course)