When used in the expression "to be a grapefruit" it means being a third wheel, the spare part, feeling left out or excluded, as is the case if you go out with a group of couples.
It turned out to be a double date--James was supposed to come along but when he found out that both my and John's girlfriends were coming along, he decided he didn't want to be a grapefruit.
by malathia February 23, 2006

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Something 50 Cent has never heard of.
"Why isn't this Grapefruit purple?" - 50 Cent
by Er.Phillips September 12, 2012

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A deeply, deeply committed commitment (like superglue), based on the tedious and lengthy process of consuming said fruit. You must be FULLY aware of the commitment you are making as you pick up the fruit, as lack of sufficient commitment will result in treacherous wastefulness.
You're pre-med? That's such a grapefruit profession! SNAP!

That's a grapefruit marriage, you better be willing to stick with it alllll the way, through the bitterness and sweetness.

by the.produce.aisle December 30, 2008

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huge or big testicles
his dick was small, but he had grapefruits
by c.t July 05, 2005

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The best living thing ever to have existed. Grapefruit is the Alpha and the Omega. It can never be called a "he" or "she", for the Grapefruit is an "It". Grapefruit is powerful, sexy, charming, seductive, outstanding, astonishing, unique, etc.The ultimate god of the fruits, Grapefruit is the most powerful fruit on earth and overpowers all veggies. It cannot be defined or explained, for Grapefruit is the unexplainable. The invincible. The almighty fruit of all time. Grapefruit has been, is, and will be. A veggie is a Grapefruit's enemy. It bows down at the throne of Grapefruit. Grapefruit is the most powerful thing in the world.
"I love Grapefruit. It is so powerful."
"Wow, that man is so handsome and charming. His name must be Grapefruit"
by Gfruitstanguello April 08, 2013

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One who has grapefruit sizes balls.
He grape fruits are fuzzy not smooth.
by MamaLucia August 21, 2006

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Used to descibe males with large bulges.
girl 1:Well,how would you describe his size? About an orange?
girl 2: No, definate grapefruit.
both: <swoon>
by Members of the Grapefruit Cult December 31, 2003

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Grapefruit, a headie nugget of marijuana that is pure white and when touched yellow keef falls off.
Joe: Yeah man just picked up that grapefruit.

Bob: Oh Man! Toss that in my Grav. BongNawwww Dogg.
by Santa Clasus May 29, 2007

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