A female who has the following characteristics:
(NOTE: It can be just one of them not all of them.)

A. Prude
B. Stays out of trouble
C. Plays sports
D. Gets good grades
E. Plays by the rules and listens to parents

In other words just a goody two shoes who doesnt like to have fun! This originated in Nebraska when girls on the soccer team would wear Green Jackets.
Dan: Hey Tom!

Tom: Yo dan what you doin tonight?

Dan: I dunno probably nothing I have to be to bed by nine.

Tom: LAWLZORZ! What are you a green jacket?
by hotshotsuperstar67832 July 16, 2009
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(n.) the prize bestowed each year to the golfer who wins the Masters Tournament at Augusta National...but more importantly:
(v.) (-s, -ed, -ing) a) to absolutely and completely master something, b) to become master over something/someone
Alt. Spelling: Green-Jacket, greenjacket, g-jay
i)
Harold: "Yo man, how did your interview go?"
Kumar: "I straight up Green Jacketed that shit, son."
ii)
Harry: "Hey, how'd you night with Laura end up?"
Lloyd: "I g-jayed that vag all night long."
by twoods1 February 26, 2008
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The most coveted prize in all of golf, and the bedroom. The Green Jacket is awarded to those who have “destroyed all holes on the course” so to speak. Unless your name is Tiger Fucking Woods the only way you’ll be getting a Green Jacket is by drilling and filling all three predominant sexual orifices on the same woman. When you’ve drilled all of a woman’s holes your buddies are legally required to award you with a Green Jacket which is to be signed and passed down among you until you’ve all worn the jacket
Well boys I never thought I’d see the day we gave Cameron his Green Jacket. Brooke finally let him plow the most illusive hole, her asshole. I’m so proud
by BillyBobStankFoot April 23, 2019
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A variation on a superman in which one ejaculates on ones partners back and then throws dollar bills on the ejaculate.

Named for the Green Jacket won at the Masters Golf Tournament at Augusta National.
I totally gave that stripper a green jacket last night.
by Mr. Tiger Woods September 9, 2010
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an annoying group of teenagers who are immature little brats who are prude and scared of any sexual references
Sally & Jane- "ewwwwww it's a penis!!!"

Dylan- "WOW they are such green jackets!"
by caity404 October 5, 2008
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reffering to weed if talking to a friend on the phone or face to face, while a parent is present.
Did you get my green jacket at Spicer's house last night, man?
by missbravo February 27, 2007
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As with 'awesome sauce', this is an exclamation or reserved sign of approval. The difference in this case being that the exclamation comes in the form of both complimenting and envying the guy wearing a Green Jacket.
Steve: So'd anything happen with that chick you met at the bar last weekend?

Dave: Not this time, brother.

Steve: No--damn dude, you guys hit it off at first, what happened this time?

Dave: The first time, she was feelin' the 'Green Jacket Sauce.' This tme, I wasn't wearing it.
by MM151 October 28, 2009
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