greenout 

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

A radio station sponsored a greenout in London in June 2007.

greenout by David E. Nye February 6, 2008

Greenout 

Someone who obviously isn't as tough as nails. Someone who is known to have greened out is often refered to as.. soft, pussy, or faggot. People often create Twitter hashtags or chirp the living shit out of the one toke pussies who consider themselves to be as "tough as nails"

Randy: "Hey Daryl! I just packed a huge bowl, Wanna toke?"
Daryl: "Yeah man! (Takes a toke)"
Randy: "Hey Daryl you ain't looking to good. I though you said that you only had one toke?"
Daryl: "I did only have one toke.. oh shit.. (Pukes)"
Randy: "Dude you greenout after one toke! Your as soft as puppy shit!"

Greenout by HackADart86 January 16, 2013

Greenout 

Power blackout caused by the utter uselessness of green energy.

Have you heard of the greenout in Manhattan?

Greenout by coulomberic July 22, 2019