
Gentlemen, is anybody interested
in my old string THEORY books?
The Big Bang Theory Season 7, Episode 20

Specifically, quantum field THEORY
in D-dimensional de Sitter space.
The Big Bang Theory Season 4, Episode 23

Look, your THEORY is fucking shit,
but the rhythm is catchy.
Money Heist Season 3, Episode 5

our THEORY still stands.
The Big Bang Theory Season 12, Episode 10

The THEORY is that
if you really tax your brain,
The Big Bang Theory Season 10, Episode 22