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

If I give the right command in German,
she'll rip your face off.
The Big Bang Theory Season 6, Episode 21

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

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

and my bowel movements run
like a German train schedule.
The Big Bang Theory Season 5, Episode 10