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19.
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
 
8.
A Grapefruit is a derogatory term for Albanian people est. in 2009 by a group of people in Connecticut.
Guy1: Yo I'm Albanian
Guy2: AHAHAHA! YOU'RE A GRAPEFRUIT!
by Qingman December 18, 2010
 
9.
One who has grapefruit sizes balls.
He grape fruits are fuzzy not smooth.
by MamaLucia August 21, 2006
 
10.
The act of getting so lonely you carve a hole in a great fruit, heat it up for 30 seconds, and masturbate with it.
"Oh my god this grape fruit is amazing!"
by Colojolo July 26, 2009
 
11.
Word used by men to get off a boner. Used by Kyle in Kyle XY.
Dude I felt like such an idiot in math. I got a boner, so I had to scream "GRAPEFRUIT!" to get rid of it.
by JSimms April 30, 2009
 
12.
D cup bra size
Hey Mikey look, grapefruits 10 o'clock
by Bigdickylewis November 02, 2003
 
13.
A food of deception. It is not a grape, and doesn't taste like a fruit. It is obvious that grapefruit is a mere vegetable in disguise.
All warfare is based on grapefruit-like behavior.
-Sun Tzu, Art of War
by tcbaklash January 09, 2012
 
14.
When Tripping on mushrooms... when your first wave of tripping hits. Also, when your in conversation and you lose all train of thought, you can explain yourself with saying "grapefuit"
and then i asked her if.... and... ummm.... woah... grapefruit!
by braddy bra July 08, 2010