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

Cat always went straight for
the sweetest thing.
Game of Thrones Season 4, Episode 5

...until the box is opened, the CAT
can be thought of as both alive and dead.
The Big Bang Theory Season 1, Episode 17

Schrodinger's CAT is
a thought experiment...
The Big Bang Theory Season 5, Episode 5

Look at us, sneaking around in the middle
of the night like a couple of CAT burglars.
The Big Bang Theory Season 6, Episode 8