what a ghost says when it jumps out of a closet and scares you.
Ghost:"Boo! I want to eat you for dinner!"


kid:"ok"
A guy steps on home plate.
The crowd doesn't like that guy.
They shout "BOO".
"Boo, you stink a lot you bad player."
von medium bro 3. Dezember 2006
A word that pisses me off very much. These days is an african-american term of affection like 'shorty'.
"Even when I'm with my boo, all I think about is you" Nelly ft Kelly Rowland - Dilemma.
von Caz 6. November 2004
when i ghost says Boo, it means I am a gohst, fear me.
Courtney is walking into a haunted house, a ghost pop up and says Boo! ...
von F4TE 4. September 2004
the nickname for a present girlfriend/boyfriend or ex girlfriend/boyfriend that you really/still care for. somone that you will always remember.
1st example: friend-dude your ex girlfriend is calling you should i hang up? yourself-nahh shes my boo

2nd example- i love her, shes my boo!
von u already knoww 13. Juli 2010
1. A verbal punch in the face. Often a very straight forward insult, statement or event causing extreme embarrassment and (or) pain to ones ego.
1.

guy A: im leet

Guy B: No, Your A Noob

Guy B And C: BOOS!

2.

Guy A: The Chinese Are Gay

Guy B: Your Chinese!!!

Guy B And C: BOOS!

3.

(Guy A Faceplants In Dirt While Attempting a Slide At Baseball)

Everyone: Boos!
von jack Vegas the Ripper 16. Februar 2010
A word used to scare people.
Guy: "BOO!"
Guy2: "omgwtfbbq"
von Gracin 11. Juli 2005

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