A term used to describe the female genetalia, derived from the vaginal resemlance of it's shell.
Diane: You should find yourself a nice girlfriend Jack.
Jack: Ooh, not for me thanks. I'm not a fan of the pistachio.
by Mr G-Man November 30, 2011
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Ronny: Hey Jim, can I piss in your mustache?

Jim: But then I would have a pistachio.
by PMonee January 24, 2016
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Dude this girl in my 3rd Period, Devon Gelista, is such a Pistachio
by Grunt-Ahuah Bros. March 22, 2011
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A young white rapper who raps about having sex with moms.
Have you heard the new Pistachio mixtape?

Yeah. I don't think I heard one song where he doesn't talking about fucking someone's mom.
by Uncle Scott August 11, 2010
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When your sick girlfriend hawks a loogie after you cum in her mouth.
Tamara was sick, so I came in her mouth and she made pistachio pudding
by Superlance1 November 29, 2013
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Lifestyle friends that you don't necessarily have sex with. They may have been vanilla friends first or lifestyle friends that enjoy each other's company, but are not sexually attracted to each other or don't want to have sex with each other for some reason
They are more than my vanilla friends, but not my chocolate friends; they are pistachio friends.
by Bikamasutracouple January 20, 2019
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