That Americans can't handle
the metric SYSTEM?
The Big Bang Theory Season 7, Episode 6
I can control
my entire entertainment SYSTEM
The Big Bang Theory Season 7, Episode 19
The SYSTEM is maintaining
its own stability.
The Big Bang Theory Season 9, Episode 24
Well, he better not be
working on our guidance SYSTEM.
The Big Bang Theory Season 11, Episode 8
To the metric SYSTEM.
The Big Bang Theory Season 4, Episode 7