The Green Door represents, or can be used as a metaphor for something that is hidden or unknown. The green door conceals secrets and truths.
Green Door, whats that secret you're keeping?

Kate: I wonder what their domestic life is like?
Tim: They keep that behind the Green Door.
by Russian ranting October 14, 2017
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(1) An evolved Yuma Yummy who has migrated south to Mexico and now makes money for having sex.

(2) A person who pays for a YY at the green door and then eats them out.
Yo, is that Sara? That Yuma Yummy done turned Green Door Whore....Sad!!
by Gemini December 9, 2003
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a phrase that has seemingly no definition on the internet.
green door dragon, a phrase with no meaning and would make a good band name
by isogreen February 11, 2008
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This is a military patch originating from the 504th flight test squadron, operating out of Groom Dry Lake, and Los Alamos AFB. Most of these projects are classified, and bearers of this patch are prohibited from discussing their occupation, hence, "A Lifetime of Silence". In a 1930's novel and a 1980's pornographic film, they both have green doors that a character cannot gain access to. In addition, the military, and most banks, use green vaults. So, the Green Door could be referencing that there are secrets that the public dosen't have access too. The true meaning of this patch is currently classified, and most likely will not be declassified in our lifetimes.
A lifetime of silence, behind the green door is the motto of the 504th Flight Test Squadron...
by AFC. Stanoff May 13, 2012
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A building located on Clark St. in Evanston, notorious for its residents acting unnecessarily proud of their accommodations.
Johnny: Where is the pregame at tonight?
Bobby Oh, my apartment. Green Door. Have you heard of it?
Johnny: Fuck you Bobby. I'll see you at 10.
by YungStunnaHardAsFuck December 24, 2015
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