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Expert drug dealer or drug user who provides quality info about drug use. A go-to-person for drugs and usage instructions; one who is especially good at maximizing fun and ensuring safety.

The black market equivalent of a real anesthesiologist.
"I never do hard drugs without first consulting my anesthesiologist."

"I thought the pill was a dud, but my anesthesiologist told me to wait another hour before taking another. He was right on."
by NYCOAM April 26, 2008