This is a sound made right before you give someone a hi-five after they have made a bad joke or an awkward comment.
"Dude, I think I am attracted to one of my aunts."

"WOO"

*hi-five*
by u-e March 28, 2005
Get the woo mug.
A word used to express exicitement or celebration.
by oskarv September 9, 2007
Get the [Woo] mug.
A shortened version of WOO HOO! to show that you are excited
"WOO! I got an "A" on my math test! YEAH!"
by Alaina vanderpaardt March 28, 2008
Get the WOO! mug.
The great word said by wrestling legend Ric Flair.
Triple H: 'Wasup Ric ?'
Ric Flair: 'Wooo !'
HHH : 'Flair, you're an idiot'
Flair: 'Woo !'
by J January 12, 2004
Get the woo mug.
It is a word said after you say something very sarcastic. It basically means whatever was said in the previous sentence means the opposite.
*An overweight man walks by*

Jim: Man, is he skinny. Woo!
by anonymous102823829 November 8, 2018
Get the woo mug.
they called them woos; you crush up the weed and you smoke it with the cocaine
by woosword April 26, 2009
Get the woos mug.