
Very similar to C-4, British origin,
and that the connexion is PERFECT.
Money Heist Season 1, Episode 11

Ah, Sheldon, this
is the PERFECT end
The Big Bang Theory Season 7, Episode 14

...I'd think looking like an idiot
would be the PERFECT camouflage.
The Big Bang Theory Season 3, Episode 6

Isn't it PERFECT?
The Big Bang Theory Season 11, Episode 14

Well, PERFECT. I made us sandwiches.
The Big Bang Theory Season 10, Episode 24