Puff Buddies
A man and woman who aren't in a relationship, but frequently hook up to smoke marijuana together.
Isaac: George are you banging Carla?
George: No we just puff buddies
George: No we just puff buddies
Puff Buddy
Someone that keeps you company outside while you smoke (have a puff).
Greg is such a great puff buddy, he kept me company in the cold last night while I had a smoke.