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2.
A Barista that can't pass a drug test.

Someone that works at a medical marijuana store selling buds
"He's too retarded to get a job, so he works as a Budtender"
by OC Stoner April 07, 2010
 
1.
The person at a medical marijuana "dispensary," or "clinic," who tends to the patients' medicinal needs. He/she works with you and helps you decide what will be the ideal medicine for you to purchase, and in what quantity.

These are also some of the luckiest motherfuckers on the face of the earth. Despite that, you should still tip them as heavily as you can possibly afford to.
"The budtenders here are so helpful and friendly!" "That budtender is really hot. I think I'm gonna blow him and see if I can get any free medicine out of it...
by 420_J July 04, 2011