
Unless they're German,
The Big Bang Theory Season 7, Episode 12

Quartz, from the
German "quarz"
The Big Bang Theory Season 12, Episode 2

But I'm from the German school. Berlin's.
Money Heist Season 3, Episode 5

What's German for "annoying"?
The Big Bang Theory Season 12, Episode 7

meaning German.
The Big Bang Theory Season 12, Episode 7