green out 

A green out is a cannabis induced physiological or psychological panic attack. Symptoms include sweating, nausea, heart palpitations, hypervigilance, paranoia, and the fear or feeling that you might be dying or about to die. A green out is typically caused by smoking or ingesting too much cannabis too quickly.

Green outs are generally brief experiences and may be followed by exhaustion or drowsiness, or a rapid sobering.

Unlike black outs, memory loss doesn't tend to occur during a green out due to the intensity of a green out.

Memory loss is much more likely to occur during a long, sustained session of cannabis use.

Unlike alcohol, cannabis use affects short term memory (what was I saying?) and not long term memory (what did I do last night?).

Sativa strains may be more likely to cause green outs (while indicas are more likely to leave you stoned)

Person 1: Dude, don't smoke so much. you'll green out.
Person 2: pshh, green out, sure, whatever.
(green outs vary depending on the circumstances so it's difficult to describe a specific example, and it can take multiple green outs to really understand what's happening when you have one).
Person 2, now an experienced pothead: Dude, don't smoke so much. you'll green out.
Person 3: pshh, green out, sure, whatever.

green out by thatonespecificguy May 23, 2018

green out 

smoked too much weed and your just fuuuucked, might puke even or just fall asleep

Example of a terrible green out:

I was with my 2 friends, we got baked as shit for like and hour and then went to the buffet, i fucken pigged out then we went to mcdonalds to get something to drink (dollar drink days!), I drank a litre of cola and then i felt really sick, started getting codl sweats and then i puked in my cup, then my friends cup, then my other friends cup and filled em all up except the last one....people were looking at me like WTF!!! i think they were anyway, i threw the puke out and we bailed

then I felt sober as fuck and realllly good, like puking after drinking...but i wanted to get high again before the movie, so we hot boxed the car and I was fucked up again and then we saw get him to the greek, i dont remember anything about the movie

green out by cuppy cupperson July 9, 2010

[Green-Out] 

To smoke too much marijuana over a long period of time, or too much in a short, quick period, and vomiting; To become completely, and utterly fucked. Everything goes spinny, you feel dizzy and tingly, and eventually yak, and pass out.

Johnny: Bro, danny just yaked, do you think he's gunna Green-Out?
Danny: Yo, slow down, i need to lie down man..
Rick: No man, you gotta stay awake.
*Danny passes out*

[Green-Out] by Thunderpuffs October 16, 2008

Green out 

green out is when you have smoked to much weed that it makes you passout.

oh my god, i think that coco and nick are going to green out.

Green out by missy smelliot October 18, 2006

Green Out 

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.

Jason: Dude, last night I got so zooted I couldn’t even walk.

Cam: Aw bro, did you green out?

Jason: maybe, can’t remember much man.

Green Out by Cxvmusic August 7, 2019

Green out 

To vomit after inhaling substances- Usually marijuana

1: *cough cough*
2: Dude- dont green out
1: *Vomits*

Green out by Dave October 22, 2004

Green Out 

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.

After three hits in a row off of the gravity bong, Clint fell over and had a green out. He woke up, drank some water & was fine.

Green Out by TheSmokeyInformer December 31, 2011