The correct spelling of the band. It is not "Greenday", nor is it "gREeN dAY!!11!1!!!".
"When I saw the Green Day concert, Billie Joe was masturbating on stage."
by Ugrugr March 29, 2005
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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
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A band that started out as "Sweet Children" playing at gilmmans street,
on the "lookout records" label, eventually they became biggewer and had to switch labels becuase of the over demand of Kerplunk, became very big once dookkie came out. relesed a few more albums. they were called sell outs for leaving the underground and lost much of there fan base, with thier aucostic song "good radiance", even more now with thier release of thier new album "american idiot" which blew up more than dookie, getting into the mainstream more than before with American idiot", "holiday" , "bulovard of broken dreams" and recently not as much play "wake me up when september ends", causeing many things.

leading me to this conclusion:
people who think Green day is gay period,
people who think greenday isn't punk anymore and that they are sellouts,
little 10 year old girls who drool over billie joe and don't know shit about them ,
the adults that really don't give a shit,
and the true fans who love all thier music even if it's punk or not

thank your for reading, and have a good day.
Haters: greenday is gay
Older fans: F**king sell outs
mindes girls: i love greenday for noreason
adults:........what?
true fans: you people are really screwed up
by Willie The Great June 30, 2005
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A day spend sitting around, smoking pot and doing absolutely nothing
Yesterday i smoked pot all day so i had a green day
by Nibsy August 23, 2005
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1.A day of smoking weed and being high
2.A popular punk rock band, that has inspired teenagers since the 90's. They just recently released the album American Idiot, which was a protest album that was good, but nothing compared to any of their earlier albums such as Dookie.All three band members are brilliant, but I hate it when my friends say things like "I dont like any other of their albums,just American idiot", or "Billie Joe is soooo hot"I know people think they've become sellouts, but theyre just popular with audiences.They cant help it.
1.We got sooo high. That was a fuckin green day.
2.Have you heard Green Day's new album?
by anonymous (11) November 26, 2005
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Green Day is a rock band that has been around since 1989. Their first cd dropped in 1990. The members are Billie Joe Armstrong, Mike Dirnt, and Tre Cool. I think they are a great band, but when their new cd "American Idiot" came out, a bunch of poseurs started to listen to them, without knowing or caring about what their lyrics mean or that they had been around before many of them were even born. Alot of true fans blame "American Idiot" for causing so many poseurs, but i think it's the media's fault. Green Day's new cd may be more pop-ish than their older stuff, but rock music itself has recently become very mainstream.
poseur- "Have you heard that new band, Green Day?"
me- "Dude, they had 8 other cd's before their new one!"
poseur- "Whatever, but that Holiday" song is so cool!"
me- "Do you even know who they're talking about?"
poseur- "No, TRL didn't say anything about that."
by wateva August 02, 2005
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Not to be confused with the American punk rock band formed in 1987, Green Day is the slang term used for that final stage in a head cold or sinus infection during which copious amounts of green mucous and nasty phlegm and discharge come pouring from your nasal passages, throat and lungs. Green Day's arrival is generally a sign that better days are ahead and the wretched demon virus is nearing the end of its course.
Constance was stricken with a wicked virus and her sinus was clogged for over a week. She was excited and welcomed the arrival of Green Day and she started to get some relief although it was quite phlegmy for a while.
by Eaton Holgoode February 22, 2014
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