
All the non-human apes
are CLASSIFIED as great apes, except one.
The Big Bang Theory Season 8, Episode 8

What's CLASSIFIED?
The Big Bang Theory Season 2, Episode 22

It's full of CLASSIFIED information
about the Air Force project.
The Big Bang Theory Season 10, Episode 20

It's CLASSIFIED.
The Big Bang Theory Season 11, Episode 8

Classified, Leonard.
The Big Bang Theory Season 2, Episode 22