The action of passing in and out of consciousness when someone takes enough, or too much depressant class drugs. Often a state purposefully attempted by the downer class user for the euphoria it envokes. Resembles passing out from not enough sleep. Can be dangerous if one passes out and stops breathing, or chokes on their vomit while unconscious.
Brian: Jimmy was so high this morning after his breakfast shot of heroin, he ended up nodding out into his breakfast meal of pancakes, and got syrup all over his face.
A term used to describe the high of heroin.. it is often mistaken as being very tired (which works out well for the user!), but it is more like "nodding" in and out of semi-consciousness. That's really the best way to describe it. It's like a series of times where the user will fall asleep for 30 seconds - a few minutes out of nowhere, and then suddenly snap into wakefulness again. They often are in very uncomfortable positions, too. (because they were not really planning or expecting to be sleeping!)..the term can also sometimes be heard with opiate-based pills, but generally it is specific for being high on heroin.
After shooting alot of H, i could see by the uncomfortable way he was sitting-with his head hanging all limp towards the ground- that he must be nodding off!
"What's up with Ted? He keeps trying to talk but then he just passes out and waking up confused?" - Guy 1
"He's just nodding off. He should go a little easier on the herioin.