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

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

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

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