
We might consider Schrödinger's CAT.
The Big Bang Theory Season 1, Episode 17

How would you like to see
your beloved Cat again?
Game of Thrones Season 2, Episode 3

Just like Schrödinger's CAT,
your potential relationship with Leonard...
The Big Bang Theory Season 1, Episode 17

He swore an oath, Cat.
Game of Thrones Season 1, Episode 1

My point was, don't buy a CAT.
The Big Bang Theory Season 1, Episode 3