Your inability
to successfully WOO Penny...
The Big Bang Theory Season 1, Episode 14
...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
the pitching of WOO.
The Big Bang Theory Season 11, Episode 11