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 9, 2004
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1. a day wasted smoking pot. john kiffeysomething, the old drummer from the band green day came up with it and also wrote a song about it. comes from sesame street. the guys were fucked up, eating cereal and watching sesame street, big bird said green day, they thought it was funny.
2. a song by al sobrante (aka john kiffeysomething) appears on 1039/smoothed out slappy hours.
3. a band
dude, every day this week was a green day. thats like 20 days man!
"Pictures sounds
Of moving insects so surreal"
i saw green day play yesterday.
by catherine March 5, 2005
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alright, all of you need to shut the fuck up about green day being sellouts. even if they do want to make a living, you shouldnt give a fuck if they have good music. if you dont think they have good music, go ahead and think that i dont care. Just because they want to make a living, doesnt mean that they dont care about the music. good god you guys need to get a LIFE. yes, i like all kinds of punk, underground to pop/punk (only occasionally.) IT DOESNT MATTER WHAT THE ATTITUDE OF THE BAND IS, YOU DONT HAVE TO CARE ABOUT LYRICS. anyhow, back to the definition.

Green Day is my particular favorite 90s and 20th century punk rock bands. made up of guitarist Billie Joe Armstrong, bassist Mike Dirnt, and drummer Tre Cool. (there is another guy but i havent been able to figure out his name. if that guy's reading this YOU ARE THE MAN.) I PERSONALLY do not think that they quite revolutionized Punk rock music, but certainly made it interesting.
person one "dude green day sucks, they're such sellouts."

person two "SHUT THE FUCK UP YOU STUPID FUCKOFF IF YOU DONT LIKE THEM JUST DONT SAY ANYTHING."
by Woodrobs January 9, 2005
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best band of all time. all of their songs are good. american idiot is a great album, along with dookie, nimrod, and all of their CDs. Green Day is made of billie joe armstrong, tre cool and mike dirnt. they rock. seriously- go see them in concert, you will not be dissapointed. they did not sell out, they just became more popular. why not share great music? it's annoying that it's cool to hate famous bands and that it is cool to like not famous bands. trying to be an individual still only makes you part of the crowd.
green day kicks ass and if you disagree, fuck you.
by that's miss bitch to you September 3, 2005
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A fantastically awesome band that has been around since 1988. They got started when Billie Joe Armstrong met Mike Pritchard (Mike Dirnt for you ignoramuses who obsess about how 'hotttt' Billie Joe is.), and voila! Sweet Children was born.

They've had a very long career that has produced 9 albums of phenomenal material. Beginning with 1,039 Smoothed Out Slappy Hours, (which was a compilation of the EP'sSlappy,39/Smooth, and 1,000 Hours), and the most recent being American Idiot, frequently referred to as the sellout album.

It is a frequent mistake of prepubescent girls that the only member of the band is frontman Billie Joe Armstrong.

THIS IS COMPLETELY WRONG.
Mike Dirnt plays bass in Green Day.

Tre Cool is the drummer of Green Day.

Billie Joe Armstrong is not the only member in Green Day.

True fans listen to all the music by Green Day
by plain old me July 14, 2006
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1) a day when you take off work, or skip school to smoke weed.
2)punk rock band from berkley. The original named was sweet children. In 1989 they changed their name to green day. this was a northern california slang term which meant to stay at home and smoke weed.
1)I think i'll have a greenday tommorrow.
2)Green day's first drummer was Al Sobrante.
by F.O.D. October 6, 2005
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1. A day of smoking pot.

2. One of the best punk bands ever.
Girl: Billy Joe is so hawt!!!
Me&Freind: It's Billie Joe.
Girl: Whatev...
Me&Freind: Do you even like Green Day for their music?
Girl:Eww I Hate Punk!!!
Me&Freind: Freak...
by No-Name-Kid March 10, 2008
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