29
Boos is never given a concrete definition, only prefaced when its used with any context at any time, and may be used for both negative and positive reasons in the same sentence.
Person 1: i got the hookah.
Person 2: is it boos?
Person 1: its pretty boos.
---
Person 1: when you rollin in?
Person 2: tues night
Person 1: boos
---
Person 1: I'll be over in like 10 minutes.
Person 2: Boos.
--
Person 1: so hows phil
Person 2: Boos
by Geem-Unit January 23, 2007
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30
This word is typically used by those of the African American race to refer to ones significant other. It is derived from the fact that in the past blacks were refered to as "spooks"

...i.e. "beat it spook, this don't concern you."

From the word spook comes the idea of something spooky i.e. a ghost. Ghost are known for saying boo. Somewhere down the line it became a term of endearment....
"i need you boo"
"just got to see you boo"
by JustinV February 08, 2008
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31
A word used by a girl to slowly choke the independence away from someone she cares about. Usually interpreted as harmless and affectionate, a significant person in your life introduces this word as a caring pet name. This is a disguise for the shackles just attached to your manhood by your girl.
"He's MY boo!"

"Hey boo, what you doin' tonight?
Spending time with me, not your boys?"
by Ozoneparadise February 23, 2007
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32
A word used to scare people.
Guy: "BOO!"
Guy2: "omgwtfbbq"
by Gracin July 11, 2005
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33
A guy steps on home plate.
The crowd doesn't like that guy.
They shout "BOO".
"Boo, you stink a lot you bad player."
by medium bro December 03, 2006
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34
1. A fucking retarded name for ones partner.
2. A word used to scare someone.
3. A word commonly hollered at 50 cent, MCR, FOB, Nickelback, and P!ATD concerts.
1. (guy) hey wuzzup mah boo, u checkin it out to feel reel gud
(girl) shut the fuck up dumbass you sound like an idiot

2. (guy 1) BOO!
(guy 2) HOLY FUCKING SHIT YOU SKARED ME REEL GUD DARE
3.
(Announcer) And now, our final act, panic! at the disco!
(crowd) BOOOOOOOOOOOOO! HISSS!
by Shadow Creator December 11, 2007
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35
Sound that a fake ghost would make
Ghost:BOOOO!
Child:AHHHHHHH!
by BEYONCE November 08, 2003
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