TV series example of the word

The Big Bang Theory Season 2, Episode 3
No, I don't know German.

The Big Bang Theory Season 10, Episode 8
because it lives in a state-of-the-art German incubator.

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

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

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