If I give the right command in German,
she'll rip your face off.
The Big Bang Theory Season 6, Episode 21
meaning German.
The Big Bang Theory Season 12, Episode 7
You know,
the German philosopher,
The Big Bang Theory Season 5, Episode 7
Unless they're German,
The Big Bang Theory Season 7, Episode 12
and my bowel movements run
like a German train schedule.
The Big Bang Theory Season 5, Episode 10