
Kripke, Professor Woo, Professor Klein,
The Big Bang Theory Season 10, Episode 16

the pitching of WOO.
The Big Bang Theory Season 11, Episode 11

Oh, not you, Dr. Woo.
You're fine.
The Big Bang Theory Season 7, Episode 6

...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