
Did you have to WOO me?
The Big Bang Theory Season 4, Episode 9

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

...that neither of you
would attempt to WOO her.
The Big Bang Theory Season 4, Episode 6

Professor Woo.
The Big Bang Theory Season 6, Episode 20

Woo!
The Big Bang Theory Season 7, Episode 6