...that neither of you
would attempt to WOO her.
The Big Bang Theory Season 4, Episode 6
Did you have to WOO me?
The Big Bang Theory Season 4, Episode 9
Oh, not you, Dr. Woo.
You're fine.
The Big Bang Theory Season 7, Episode 6
Professor Woo.
The Big Bang Theory Season 6, Episode 20
Woo!
The Big Bang Theory Season 7, Episode 6