Another word for dude, or buddy, or bro. Usually used when greeting your nigga when you see them. Doe bluh can be said in various tones and pitches, to change the emotion you wish to convey. Also, the word(s) are usually used among a population of marijuana enthusiast.
Stoner 1: What's up doe bluh?
Stoner 2: Nothing bro, just getting ready to toke
Dude 1: Yo doe bluh, happy birthday!
Dude 2: thanks doe bluh!