Greendaying 

n. A euphemism for masturbation in reference to the song "All By Myself." Used mostly by ugly-ass high school girls passing notes at the Twins game next to the left field pole.

Ugly Girl 1: I've been Greendaying every once in a while, but i really don't think about Jesse all that often. I swear.

Ugly Girl 2: Eeeeeww!!!

*stupid bitches*

Greendaying by paddlenaked June 27, 2004

Greendayism 

A so-called religion that involves people who are totally obsessed with Green Day.

Green Day Fan: OMG I don't follow Jesus, I follow Greendayism!! DUH!

Greendayism by xX-dismal-Xx May 28, 2007

Green Daying 

Green Daying is a verb, which describes when somebody is listening to songs by the American Punk Rock band - Green Day, continously, for a fairly large amount of time.

The reason verbs like this do not exist for other bands, is because not all bands can be listened to for a long amount of time, without getting boring.

Usually, iTunes is used to Green dayage. But Sometimes MP3 players etc. can be used. In most cases, at least 15 or more songs are needed to Green Dayage.

A true Green Dayager will try to get his/her hands on every Green Day song avaliable, through any means possible.

For many people, Green Dayaging is a hobby. It's something they like to do when they are feeling down, or why they are feeling up, or... in fact, in any mood.

Mike had been Green Dayaging all night long and he only stopped because he had to go out. This is an example of "Green Daying"

Green Daying by Green Dayer December 5, 2009

GreenDayIsTheBest 

He says "an awesome green day song" to every song he's defined, even if it's not that good, and it seems he only has their International Superhits.

an awesome green day song

GreenDayIsTheBest by TheLostDude December 31, 2004

Greenbaying 

The art of picking a booger and then inserting the finger up your girls anus and then wiping it on her bowels.

Doctor: How did that greenie get in your stool?
Girl: Oh my boyfriend gave me a Greenbaying at the stroke of midnight.
Doctor: Respect

Greenbaying by Az McFly September 1, 2008