...which posits the EXISTENCE of infinite
Sheldons in an infinite number...
The Big Bang Theory Season 3, Episode 3
If you guys prove the EXISTENCE
of Unruh radiation...
The Big Bang Theory Season 7, Episode 2
...he wrote a paper
postulating the EXISTENCE...
The Big Bang Theory Season 6, Episode 3
I'm denying its EXISTENCE.
Game of Thrones Season 2, Episode 2