Not just for THEORETICAL physics,
but for astrophysics.
The Big Bang Theory Season 8, Episode 6
So now let's bring out THEORETICAL physicist,
Dr. Sheldon Cooper!
The Big Bang Theory Season 6, Episode 18
...because he said
it was a THEORETICAL nut conflict.
The Big Bang Theory Season 8, Episode 21
...I would've become a THEORETICAL physicist.
The Big Bang Theory Season 8, Episode 7
It happens to THEORETICAL
physicists all the time.
The Big Bang Theory Season 5, Episode 17