coined from the hit movie "Mean Girls" by the excellent actress Rachel McAdams. It can mean many things, either friendly or non. Mostly used as a greeting, or as a burn, bitch.
Jeanean: "Hey Kylie!"
Kylie: "Boo you whore! what are you up to girl?"
Geneva: "I'm so upset! My boyfriend David broke up with me!"
Olivia: "Boo, you whore-- get over it!"
Barbie Barbara: "Damn, I'm hot in my A&F jeans."
Emo Emily: "Boo, you fucking whore! Get over yourself, cake face!"
Kylie: "Boo you whore! what are you up to girl?"
Geneva: "I'm so upset! My boyfriend David broke up with me!"
Olivia: "Boo, you whore-- get over it!"
Barbie Barbara: "Damn, I'm hot in my A&F jeans."
Emo Emily: "Boo, you fucking whore! Get over yourself, cake face!"
by Sophie_Fatale January 03, 2007
it is bigger than a boo yaa, which is slang for a 12 gauge detonation. this is like both barrels or say a piano falls on yer head or say a large rifle caliber goes off (.50 bmg or .700 action express) and shoots a cashier at stop n go and rips him in half. if a boo yaa its usually boo yaa boo yaa but boo-yaka-shaw is only used once.
you got a 12 gauge loaded with slugs and this punk starts talkin wak and every time you shoot him you tear off a shoulder and arm or blow offa leg. thats boo-yaka-shaw
by who dat November 07, 2004
by Alex Wander February 26, 2008
by iloveucookie July 22, 2015
by Ethan! The boo-yah-yah-iest of them all! November 25, 2006
Babies in roblox who are very self absorbed, rude, and picky. Usually don't like other babies, unless they're "cute" and act like them. Are known for bossing around their mwa mwas for toys, mwa mwa milky, and other weird things. Commonly found in Adopt and Raise.
Roblox Player 1: Awh! Is that a baby? So cute!
Roblox Player 2: That's one of those roblox baby boos, don't adopt it.
Roblox Player 2: That's one of those roblox baby boos, don't adopt it.
by BiodegradableBabies May 30, 2021