Top Definition
1. Boyfriend or girlfriend
2. Word used to scare people
1. Can you handle me? If you can't you ain't gonna be my boo.

2. Guy: BOO!
Guy 2: Holy sh*t!
by Antony June 08, 2004
A word used to scare a person
Person 1: BOOOO!!!
Person 2: AHHH!!!
by Reagan Lausche February 21, 2005
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! ...
by F4TE September 04, 2004
term used to signify something you don't approve of. origin comes from booing people on stage.
A girl walks by dressed horrifically.

Respones: "look at that girl, now that's a boo"
by jasev May 06, 2004
a pet name for your significant other. sometimes used inappropaiately by people over thirty years of age
I love you boo
you're the one for me boo
hey boo can you get me some prune juice
by fruitcake201 July 05, 2015
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!
by u already knoww July 13, 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!
by jack Vegas the Ripper February 16, 2010
Another way of saying "okay" "good"
Guy1: You want food bro?

Guy2: nah i'm boo.
by Giggin November 17, 2013

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