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An acronym for Rick Riordan's book series Heroes of Olympus, sometimes HO
Wasn't that quote in HoO hilarious?
HoO by iWinterSun April 4, 2019
Related Words
hood rat hood hooker hook up hoodie hook Hoot hoon Hoover Hooters
Something that happens when Yahoo! Towers players break a series of blocks spelling out the word Yahoo! and immediately breaking something, sending blocks out to his opponents to fill up their screens.
Used by players with more experience.
Hey man, did you see that hoo? That's skills!
hoo by Bel January 21, 2005
Someone who is unreliable, spreads gossip like wild-fire, and lies.
I don't believe what he said, he's hooing again.

He is being a hoo/John is a hoo.

Shouting "hoo" when someone is caught in the act making-up a story.
Hoo by chakakat March 16, 2009
I met this French girl, she uses "hoo" a lot to express her excitement over random things.

Sooooooooo

I've drawn out the conclusion that she wants to fuck me.
Hoo! That is cool.
Fuck me, daddy! That is cool.
hoo by pink potato pie August 8, 2018
Referring to the female anatomy, specifically, the entire vulval region.

See also, Hoohoo, Hooha.
"She has a perfectly trimmed hoo."
"Remember to wash your hoo!"
"I shaved yesterday and now my hoo is itchy."
hoo by LumpyBump December 28, 2005
The sound my ass makes when i have bad gass or just ate an owl
hoo by Dumb Ass August 16, 2004