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

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

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

I'm plagued by an INTERNAL struggle.
The Big Bang Theory Season 8, Episode 6

Internal jugular.
Money Heist Season 1, Episode 5