boo

The word a ghost says to you to say "hi!"

Ghost: Boo!
Me: How are you?

by Ghost33 August 16, 2009

boo

Used to convey ones disapproval or disgust of something.

Guy 1: Hey, check out that sweet Honda.

Guy 2: Boo to Hondas and Boo to you.

by Little Dog Monk August 30, 2006

boo

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"

by Shannon and autumn are the best. July 23, 2005

Boo

Boo is a hamster who serves as the animal companion of the berserk ranger Minsc from the Baldur's Gate series of computer games. Minsc claims Boo is a miniature giant space hamster.

Minsc will lead with blade and boot! Boo will take care of the details.

by Jason Attard October 22, 2004

boo

one of the most annoying things a ditzy girlfriend will call her boyfriend.

Girl's Twitter: OMG I CAN'T WAIT TO SEE MY BOO!!!! <33
Rest of the world: Shut the fuck up!

by Erin_12_22 October 10, 2009

Boo

The scariest thing ever

"BOO!"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

by SLAP 'NOTHER CLAM ON THERE April 28, 2022

boo

Disapproval.

Guy1. Yo this one time....
Guy2. Boo!!

by hasselhoffman February 26, 2009