"Private and Confidential".
The Big Bang Theory Season 11, Episode 9
And don't worry,
this is all entirely CONFIDENTIAL...
The Big Bang Theory Season 2, Episode 9
The CONFIDENTIAL agreement to look away
from the Mediterranean.
Money Heist Season 3, Episode 5
They made me reveal CONFIDENTIAL
information about Howard's father.
The Big Bang Theory Season 6, Episode 19