
No, he cut open a tauntaun and used
its INTERNAL body heat to warm him up.
The Big Bang Theory Season 2, Episode 23

Homeostasis refers to a system's ability
to regulate its INTERNAL environment.
The Big Bang Theory Season 6, Episode 2

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

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

Internal jugular.
Money Heist Season 1, Episode 5