Boo 

Basically it means like forget you.

*1. Someone keeps staring at you, you say "Boo Bitch! Whatchu lokkin at?!?!?!"

*2. Girl 1: Hey can you hang out today???

Girl 2: No sorry...

Girl 1: Boo, you whore!!! You suck.

Boo by lol.it.babe=) June 3, 2009

boo 

when you looking at someone insted of saying what the fuck you lookin' at they say
"Boo"

um,"boo"

boo by the cool wierd hot butt ugly g December 9, 2008

boo 

An ambiguous term for endearment. A significant other without a title.

My boo Melissa and I went out to lunch; we held hands, and shared a kiss, but it was not a date.

boo by Hendrick January 3, 2009

boo 

1) 1 of the 3 main relationship types, the others being Shawty and Girl/Boy.

Of all 3 Boo is easily the most miss used and misunderstood. Your 'Boo' originally designated "the person you fuck but don't want to be seen with..."

2) desperation fuck-buddy, that one lay you know that you can get, but really don't want to stoop to

"Oh look out son, here comes your Boo." "Oh Shit!!" ((panicked diving behind bushes, crawling for the alley, and running like mad))

boo by Raymonde Duffielle December 15, 2009

Boo 

Boy or Girlfriend but just as annoying as the word Bae of the same meaning.

Gonna slap my Boo in the face.

Boo by Rollerball April 6, 2015

Boo 

A non-gender specific name/term of endearment inferring affection but not necessarily

Also be used as a non distinct friendly nickname that indicates comfort and familiarity that in no way means any commitment too anyone

I can hardly wait until my boo gets a chance to be there.

Boo by JR Seeow March 7, 2017

Boo 

Boo a word that can be used in two ways in a sassy way or a kind way

Who do you think you are boo

Boo by Hrhdeveb May 10, 2018