
That was actually
a poorly-chosen EXAMPLE...
The Big Bang Theory Season 4, Episode 7

Another fascinating EXAMPLE
is the epaulet.
The Big Bang Theory Season 2, Episode 14

That's not true of all bars.
Juice bars for EXAMPLE.
The Big Bang Theory Season 4, Episode 5

For EXAMPLE,
The Big Bang Theory Season 10, Episode 10

This is a classic EXAMPLE
of Münchausen's trilemma.
The Big Bang Theory Season 2, Episode 1