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