
I had to write a THESIS, and
I wasn't smart enough to do it.
The Big Bang Theory Season 12, Episode 21

Jean Buridan proposed
a philosophical THESIS stating
The Big Bang Theory Season 10, Episode 7

was googling,
"Where can I buy a THESIS?"
The Big Bang Theory Season 12, Episode 21

Before that,
I spent four years working on my THESIS.
The Big Bang Theory Season 1, Episode 4

We took quite a detour
from what I understand to be your THESIS.
The Big Bang Theory Season 1, Episode 15