Boo 

Used to call your friends this. Way different meaning than a babe or baby. Girls usually call each other this. If a girl call a guy this it doesn't mean anything, she's just being friendly.

Rosa: hi boo!
Eric: hi friend!

Boo by jesssyyy.___ September 13, 2016

boo 

An term that Black people call Caucasian people because they're as white as ghosts.

"Sup boo"

"Shit, look at that boo"

boo by Bebop32 January 2, 2009

boo 

BOO is when you jump out and try to scare them by saying boo! BOO does NOT mean a boyfriend or girlfirend as the chavs above decided to put! grrr get it right fuckers!!!

person: BOO!!!!
person 2: whos dude you scared the crap outta me!

boo by i like spoons July 27, 2005

boo 

intra. v.
(bu)
1. Name of cute little girl in Monsters Inc. who came into the monster world and terrorized Mike Wizowski and James SUllivan, the leading scarers at Monster Inc.
2. Very cute girl who wore oversized, pink shirt and had pony tails.
3. Yelled "Mike Wizowski!" all the time in a cute high pitched voice similar to butter on a bald monkey.

Mike Wizowski

Boo said, "boo!

Mike Wizowski!

boo by eric hsu January 6, 2004

Boo 

1. To disagree w/ ones comments. To show shock of a comment.
2. A nickname used to call a loved one

1. Boo!!! Aww no you didn't just say that!!
2. You know you're my Boo, baby I love you.

Boo by Ms. V October 4, 2005

boo 

Derived from "booty call."

1. A contact used for sex.

2. A nickname for a significant other.

3. A sudden sound made to frighten someone.

4. An expression for negativity/dislike.

1. "Man, I really need to get me a boo tonight."

2. "That's my boo!"

3. "Boo! Did I scare ya?"

4. "Boo! This sucks!"

boo by AsianGlow March 16, 2008

Boo 

Word used to tell someone who won’t stop staring at you.

Guy 1: *stares*
Guy 2: Boo!

Boo by Lanky_fxck August 9, 2019