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

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

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

At best you can say, "Hey, look, my idea
has an INTERNAL logical consistency."
The Big Bang Theory Season 1, Episode 3