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

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

(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

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