
According to the head of INTERNAL medicine
Money Heist Season 1, Episode 5

The Internal Revenue Service
would strongly disagree.
The Big Bang Theory Season 2, Episode 18

It’ll be the INTERNAL medicine doctor,
won’t it? I don’t know.
Money Heist Season 1, Episode 13

If you want, I can call Internal Affairs,
Money Heist Season 1, Episode 11

...and the result
was an INTERNAL blitzkrieg...
The Big Bang Theory Season 1, Episode 11