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

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

a record of the INTERNAL process
of their cognition.
Westworld Season 2, Episode 9

(SIGHS) Can it be more of
an INTERNAL struggle?
The Big Bang Theory Season 10, Episode 7

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