...and the result
was an INTERNAL blitzkrieg...
The Big Bang Theory Season 1, Episode 11
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
creating a pair
of INTERNAL connecting rods,
The Big Bang Theory Season 7, Episode 15