
Internal jugular.
Money Heist Season 1, Episode 5

...and the result
was an INTERNAL blitzkrieg...
The Big Bang Theory Season 1, Episode 11

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

creating a pair
of INTERNAL connecting rods,
The Big Bang Theory Season 7, Episode 15

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