look up any word, like bootylicious:
4. Dr. Greenthumb
the guy who everyone knows sells pot but is yet to be caught. He may possibly be your dealer, mostly likely grows his own stuff or has a large supply, often cheap sometimes medical
usually dosent smoke his own stuff.
person1: so who are we looking for?
person2: my Dr. Greenthumb
person1: oh that dude that stands in the ally by safeway with the afro and trench coat and box of lighters?
person2:yup

cop1:that guy in the hoodie over there is a Dr. Greenthumb
cop2: i know but he never has any on him or at his house.
1. Dr. Greenthumb
A song by the hip hop (and hip hop/metal crossover) band, Cypress Hill.

It can be found on their fourth album, imaginatively titled 'IV'.

Its subject matter relates to the above definition (i.e. Marijuana use, or a nickname of someone proficient at its cultivation).
Hey, have you heard that Cypress' track Dr Greenthumb?

Yeah, it's fucking cool. Pass that joint.
by Rize Dec 15, 2003 add a video
2. Dr. Greenthumb
n- one who is proficient at the growth of and/or use of cannibus sativa.
Dr. Greenthumb is lookin fuckin high tonight!
by Paul Dec 6, 2003 add a video
3. Dr. Greenthumb
The one who get the herb man what he need.
"Hey man can i get a sack?"
"Fuck dude im out. I gotta re-up"
"Call up Dr. Greenthumb. Hes got some mad chronic"
rss and gcal