Slang for a day containing alot of green bud where you would just sit around taking bong hits, and hanging around.
Hey, yesterday we had a green day!
by January 23, 2005
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 03, 2005
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."

by Woodrobs January 09, 2005
really good band. have been good since they started, which means that american idiot is not their first album. i do not care that people like their music now, but it would be nice if they would appreciate that they had loads of albums BEFORE american idiot which were equally as good. there is more to this band than 'hot' billie joe armstrong, which means all you idiots who think you are his secret wife or something should just shoosh. and american idiot and boulevard of broken dreams are NOT their only songs (horror of all horrors).
*silly girly girl* - omg! green day are just sooo amazing! i love american idiot! it's like, so totally the best song EVER! don't wana be an american idiot!
by jk March 19, 2005
for a bunch of "fans" you could all at least spell the band name right. See Green Day, not Greenday.
Also, a green day is when you do nothing but sit around and smoke weed. It is also the (mispelled) name of a great band, that has been around since teh eighties.
Its green day, not greenday.
Green Day now owns you.
"A guy walks up to me and asks 'What's Punk?'. So I kick over a garbage can and say 'That's punk!'. So he kicks over the garbage can and says 'That's Punk?', and I say 'No that's trendy!'
by Caroline March 24, 2005
This is a band you used to listen to and kids would make fun of you. You would then work hard on your music, get more involved and the punk rock scene would advance and grow.

And now you make fun of kids with Simple Plan shirts.
5 years ago: "Hey, look at the kid with the Green Day Shirt"

Now: "Hey, look at the kid with the Simple Plan shirt"
by Revolver September 14, 2004
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