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 28, 2014
Get the Green Day mug.An amazing "doom metal" band brought together in 1990 as a death metal band by tchort (Terje Vik Schei)(Emperor, Satyricon, Einherjer and Carpathian Forest) Because of his part in Emperor it disbanded. Later reunited in 1998. There album "light of day, day of darkness" is one of the most ambitious album projects of its time, if not ever.
by AlphaOmegaCFH December 11, 2003
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Green day
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by Chloe Gummidge May 15, 2012
Get the Green Belt mug.Typically in Call of Duty, the green guy is the dick who fools around and makes all of the teammates worse off. They often troll the team purposely, causing them grief and anger.
by DATgreenguy January 18, 2015
Get the Green Guy mug.TRUE fan of Green Day who has actually heard of 1039 Smoothed Out Slappy Hours and Kerplunk. Not only knows the names of all 3 guys in the band, but their marital status and the names of their children. Makes pilgramige to Berkley, California.
by Short & furious death May 3, 2005
Get the Green Day Elite mug.The colors that make up the flag of Italy. They ared displayed in three vertical rectangles in the above order.
by brian July 17, 2005
Get the Green, White, and Red mug.by Amroc May 19, 2005
Get the green skittles mug.