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1. A band that is punk rock-ish and a band that some people think have sold-out. Alot of people think that everyone who is under 15 who likes them only know the albums American Idiot and 21st Century breakdown But this is not true.

2. A day dedicated to smoking weed.
1.Green Day's best album is Dookie.

2. Guy 1 : Dude, you are smoking loads of weed today.
Guy 2 : Yeah I know, its my Green Day.
by IainJMR March 11, 2011
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324
The best band ever. Bands such as My Chemical Romance and Good Charolette try to copy them but fail. Formed in 1987 as Sweet Children with a different drummer than Tre Cool named Al Sobrante. Since then, they have been the most awesome and amazing and ever.
Green Day are the best band to ever walk the earth.
by bass boy1234 May 18, 2010
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325
A bollox rock band. rock sux - Garage , Drum and Bass and HipHop r the best.
Green Day ?!?!?!?! u gotta b jokin. Listen to some propa music!
by Loop (yik) April 07, 2005
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326
Fag ass british "punk" band who likes taking it in the "corn hole". They are british pole smokers.
Green Day likes dick in all of their bums.
by John Phiscer October 13, 2009
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327
A day where you decide to be friendly to the environment.
You driving to work today?
No. I'm having a green day today.
That's cool, I'm gonna have one next week.
Really?!
No, I'm just foolin'
Oh...
by Jimmy6550 December 30, 2010
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328
A great alternative/rock band that is mistaken to be listened to by today's teenagers and wanna be goths. But, is really just a great band that deserves more credit than they get.
Hey what's your favorite band?

Green Day.

You wanna be goth! You probably don't even know any other rock bands.

No? I just think it's a good band, and yes I do listen to more than Green Day. They're just my favorite band in my favorite genre of music...
by Surfergirl November 17, 2014
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329
A gay band for people who like gay music(If it's even fair to call it that).
Idiot:"Dude, I'm going to see Green Day next week"
Human:"Fucking idiot, Green Day sucks ass!"
by FUCKING SLAYER!!! March 21, 2019
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