An acronym for Rick Riordan's book series Heroes of Olympus, sometimes HO
Wasn't that quote in HoO hilarious?
by iWinterSun April 5, 2019
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The mating call for a male owl to attract his sexy other owl.

OR

The female chest
HOO HOOO

WOW Caila has no hoo hoo's
by FUCKER May 10, 2003
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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!
by Bel January 21, 2005
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A Scottish term for a garden "hose." Often used by groundskeepers.
"Put the Noozle on the Hoose!!"
by Covin January 10, 2008
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Hoo-Hoos is off of the 2009 movie, "Dude, Where's My Car" Starring Ashton Kutcher and Seann William Scott.
*Line from movie*

Kristie Boner: Don't you remember giving me 500$ to show you my hoo-hoos?

Jesse Montgomery: F-five hundred dollars!?!?

Chester Greenburg: HOO-HOOS!?
by I LOVE ASHTON JAJAJA November 1, 2009
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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.
by chakakat March 16, 2009
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