A term used to scare the frightened.
BOO! OMG you scared the shit out of me!
de Jared or J-RAD! 23 Martie 2008

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A pet name created by those who are entirely devoid of describing their true feelings for their significant other.

In other words? A "loving" term thought up by lazy, inconsiderate imbeciles.
"Oh, like, I SOOOOOO love you, Boo!"
de Magmeezie 29 August 2003

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Boo is a hamster who serves as the animal companion of the berserk ranger Minsc from the Baldur's Gate series of computer games. Minsc claims Boo is a miniature giant space hamster.
Minsc will lead with blade and boot! Boo will take care of the details.
de Jason Attard 22 Octombrie 2004

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someone you love or adore
that's my boo
de barunsbutt 26 Martie 2014

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Used to convey ones disapproval or disgust of something.
Guy 1: Hey, check out that sweet Honda.

Guy 2: Boo to Hondas and Boo to you.
de Little Dog Monk 29 August 2006

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Disapproval.
Guy1. Yo this one time....
Guy2. Boo!!
de hasselhoffman 26 Februarie 2009

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Word used when expressing your disdain when somebody changes their mind about something, i.e. after something improves and is worthy of their notice.
You didn't say boo to the White Sox until they won the world series.

That guy never said boo to you until you lost all that weight.
de Paddlegurl 08 Noiembrie 2005

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