Boo Hiss

Used by fans at sporting events to respectfully let referees know that the pervious call was horseshit. Will not get fans kicked out of games and clearly expresses what you think of the call. Can be used with Outrage.

At a soccer game, the referee fails to call a clear foul. Fans quickly yell “ Boo Hiss” followed-up by “Outrage”.

by Claypot2 September 17, 2023

Boo

character in the Mario series

Dude, did you collect every boo in luigis mansion

by Glossyhin May 11, 2020

Boo

The female in the “ relationship “ is willing to drop that neck off all the time

My boo is staying the night

by Real grammar guy November 2, 2021

Boo boo ting ting

The love of your life. The one you can be yourself with. Someone so special to you, you can’t even imagine going thru life without them.

Good morning my boo boo ting ting, want to get some coffee and take leighlah to the dog park?

by Jakeypoopoohead April 26, 2022

Boo

Another name for Jeremy ray Taylor, an actor who is known for his role in IT

It’s basically a code word

I DONT LIKE BOO

by Wyatts oleffs wife August 18, 2021

Boo Basket

a trend on TikTok where people (usually young women) purchase an assortment of cozy items and put them in a basket, these baskets are typically themed around a season or aesthetic, namely fall, hence the name "boo basket", but not all of them are fall-related. This trend seems to capitalize on the "overconsumption-core" trend on TikTok, where creators will buy excessive amount of items, usually beauty or bath products, and make an aesthetically pleasing video displaying the often alarmingly sized collections of said items, neatly arranged and color-coded. Essentially, it's just another iteration of people buying cutesy items they don't really need for clicks.

"my sister got me a boo basket for Halloween and I don't know how to tell her that I already own most of the things she got for me"

by queenofcringe October 12, 2025

Boo

Common street slang, specifically in the Upstate NY region for a vape or e-cigarettes. Used mostly by the youth. May be referred to as a boo thang as the full term.

“Yo bro do you got a boo?”

“Nah twin but I heard Bob got one!”

“Shit twin I gon see if I can smack his boo thang my guy”

by G-Man2009 August 28, 2025