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22.
1. A day spent smoking weed, usually out of boredom.
2. A pop-punk band formed in 1988, with many good songs out like "When I come around", "Time of Your Life", "Why do you want him?" and more. I discovered them in 5th grade when hearing Boulevard of Broken Dreams on the radio. I looked them up and, well, fell in love with their old stuff as well as new (but preferring pre-American Idiot). But then, I discovered something in 6th grade called real punk. I really got into The Stooges, The Ramones, The Clash, Misfits, Sex Pistols, etc. A year later, I listened to American Idiot for the first time in years and came to a conclusion: that (new) Green Day, while being pseudo-punk and somewhat annoying, is a pretty unique band. Compare them to the other stuff that's out today!

HOWEVER, Green Day started an epidemic of a new breed of poser. It's when someone aged 8-13 believes they are "seeeeew punk rawk" when they listen to Green Day, Blink 182, or Avril Lavigne. They oftentimes don't even know who the bands I mentioned previously are. Those who like Green Day are often seen bashing Bush without even knowing if or even why he is a bad president. Now, not everyone who listens to said music is this way, just a vast majority. Not saying bad things about everyone who likes Green Day, just those who listen to them only and try to be something they're not. To conclude, a decent band.
1. Jimmy's so baked. It's definitely a Green Day...
2. Actual conversation:
Poser in my class: I just love Green Day omg!
Me: Do you listen to anything else??
Poser: Well my favorite artist is Avril Lavigne. It's just pure punk rock!
Me: Dude, thats not punk. Have you even heard of the Ramones? The Clash? The Sex Pistols?
Poser: Well, I havent heard of the Sex Pistols or the Clash. But the Ramones are gay!
Me: -rams head into wall repeatedly-
by Rachel_isapunkrocker May 17, 2008
73 20
 
36.
A band from Oakland, CA. The band consists of three main members (Billie Joe, Mike and Tre). They have made 11 albums since 1990. People seem to think that they went mainstream w. "American Idiot", when in reality they went mainstream in oh... '94.

I'd like to state the fact that Green Day released "American Idiot" BEFORE Bush was re-relceted.

~~~`
-or a day spent wasted on pot
I went to a Green Day concert, yesterday. I wish they would have played "When I Come Around".

Dude, man, yesterday I was like soooo high... totaly green day.
by urbandictionaryinsistsiuseaname January 22, 2007
39 17
 
37.
The way retarded snotty arrogant narcicist cocky Nightwish-obsessed pricks spell or "speel" Green Day.
kid: YO GREENDAY SUX

Me: No. It's GREEN DAY YOU IDIOT. And they are better than Nightwish.
by Blahb April 22, 2005
84 62
 
38.
1. A band which kicks major ass.
2. Saint Patrick's Day
3. A good day to smoke up.
1. Green Day is off the heezy.
2. Tomorrow is Green Day!
3. I'm bored, I think it's time for a Green Day.
by Chris Johnson January 08, 2004
73 51
 
39.
A common mis-spelling of the band Green Day. I know we all make typos, but if you like the band, you should at least try to spell their name correctly.
"OMGZ I LuV greenday!!1!1!1"
by christie road January 15, 2006
34 15
 
40.
An American rock band formed in 1987. The band consists of Billie Joe Armstrong (vocals and guitar), Mike Dirnt (Backup vocals and bass guitar) and Tre Cool (drums).
After releasing the album "American Idiot", they gained a great deal of popularity. The album deals with the George Bush era and the Iraq war, as well as being a teenager in disadvantaged areas of America and thus being without prospects for the future.
Their latest album, "21st Century Breakdown", deals with the economic crisis, war and religious fanaticism amongst other themes. Although musically their latest album is not considered to be as strong as "American Idiot", it's lyrics are very advanced.

Green Day are different to many other modern bands in that they sing and play music about the objective world, about relevant issues which affect a lot of people.
Green Day are a breath of fresh air in the current musical world.
by ShineOnYouCrazyDiamond August 09, 2009
30 12
 
41.
A great band that have brought out many fantastic albums and became big in 1994 with the album called Dookie. But have had other albums suchas Nimrod, Imsomniac and Warning.
The members in Green Day are Tre Cool, Mike Dirnt and Billie Joe Armstrong.
"Woah I have liked Green Day since back in the Dookie Days"
by PeRsOn0101 September 11, 2005
53 35
 
42.
A decent band that earned the nick-name 'sell-outs' because their latest album, American Idiot, was popular.
Bruce: Gawd, Green Day is just a sell-out band. They aren't as good as they used to be.

Wayne: Why, because their album did well, and they gained a bunch of new fans?

Bruce: Well, the fans are a bunch of tweens that never listened to their old albums.

Wayne: Wow. I didn't know you had to like EVERY album and EVERY song they made in the past to be a fan of their current work. Dipshit.
by LadyHailey August 27, 2008
32 16