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a horrible band that has caught the attention of stupid teenagers in recent years. With their song "American Idiot" they have demonstrated that they clearly do not like our country. Well, if they have such a problem with America then they should GET OUT! (and their older albums aren't any better than their newer ones)
"I dont want to be an american idiot"....THEN GET OUT!(Green day sucks)
by splendy December 22, 2006
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276
An pharse derived from the early days of Langley Park secondary information to insult someone who is being a bit emo.

Extension of "green" is obligatory.
"Oi GREEEEEN DAAAYYYY"
by morgangills November 12, 2004
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277
noun1: A punk rock band who have totally sold out due to American Idiot, which is bollocks. Nethertheless, they used to be pretty cool, and i recommend Kerplunk! still.
noun2: A day which is particularly green.
1: Oh meh gawd Green Day used to be so brilliant *recites all of International Superhits*. Shame they're wank now.
2: Random Kid: Y'know what? yesterday i felt like it was a Green Day.
Random Kid's Friend: Alright!
by Tom Reeves March 06, 2005
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278
1)The coolest rock band ever. lead singer, billie joe armstrong, drummer, tre cool, guitarist, mike dirnt. took of in 1994 when they released dookie, and again when they realesed Good Riddence in nimrod. suddenly became "the best band in the world" when they realeased american idiot. now, eveyone's fave. band is green day, and their fave. song is boulavard of broken dreams. their old songs are sooooo much better.

2)a day where all you do is smoke marajuana
dude, lets go have a green day!
or
Dude, green day is the best band, but i love god riddence!
by I love Green Day September 26, 2005
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279
1. Day spent smoking pot

2. What used to be a good band until the release of thier 2004 album ''American Idiot'' Now everyone and thier grandma is a Green Day fan, when most of these newcomers have not heard of them before idiot. Now all you hear is how hot Bilie Joe is or ''DON'T WANNA BE AN AMERICAN IDIOT! YEAHH WOOO!'' Seriously, grow the fuck up, face it thier sellouts
1. I don't feel like going to school, let's have a green day

2. For further information about the band, please see sellout
by DizzyLizzy March 10, 2007
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280
Def. 1- An American punk-rock that is fucking awesome, despite reports of the oppisite. Their new album 21st Century Breakdown (NOT American Idiot, dumbasses) has sold millions of copies all over the world. Some think they are sellouts, which I find hilarious. How many Green Day products do you see in stores? Last time I checked, none, except for the occasional t-shirt.

It is said that they named their band because of their love of marijuana.

Def. 2- A day where all you do is smoke pot, often resulting in the munchies
1- Guy1- Hey dude, awesome Greenday shirt!

Guy2- Green Day is two words, idiot.

2- Duuuude, I just had a green day and I totally want some cheetos.
by HotPunkChick January 16, 2010
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