When someone smokes so much marijuana that they black out and lose consciousness

Green Out: When a pot smoker has smoked a lot of weed in a short amount of time, or taken large hits of very good bud and passes out. Vision gets blurry, loss of hearing, and your balance gets so out of whack you don't know which way is up. This can happen with both newbies & long time smokers.

Basically;

You’re so high on weed (hence, “green” out), that you are totally useless. Common effects of greening out would be horrible munchies, motor functions are almost gone, you can’t speak coherently, memory loss from the night of, nausea, vomiting, etc.

In other terms, it’s like getting blacked out drunk, but instead of alcohol, it’s weed.

green out is to high as blackout is to drunk

Voluntary electrical blackout undertaken because of environmental concerns such as pollution and global warming.

When you get so stoned out of your face, your face turns
green and are at the point you are going to puke.

1. Feeling seedy in the head and or in the stomach from smoking weed.

Face goes green and the person feels like throwing up.

2.When your not getting stoned but you keep smoking and you just feel sick (sore muscles, seedy and drained in the head).

3.When one bong blows you out to sleep cause you haven't smoked in a while.

Usually happens when: A person can't finish a cone 'cause it hits them too hard and their oversmashed instantly. At this point it can become a whiteout.