
of who's allowed in his
tree FORT if fe ever gets one.
The Big Bang Theory Season 7, Episode 6

You just made the FORT.
The Big Bang Theory Season 7, Episode 6

Okay, fine.
Sheldon, may I please visit your FORT?
The Big Bang Theory Season 8, Episode 20

From the inside,
it's an impenetrable FORT.
Money Heist Season 3, Episode 3

Fort Knox doesn't have
a secret physics lending library.
The Big Bang Theory Season 8, Episode 20