Classic lines,
The Big Bang Theory Season 12, Episode 23
This is a CLASSIC example
of Münchausen's trilemma.
The Big Bang Theory Season 2, Episode 1
...against your Flash 123,
the CLASSIC "Flash of Two Worlds" issue.
The Big Bang Theory Season 3, Episode 2
...probably playing "Donkey Kong"
on my CLASSIC Nintendo.
The Big Bang Theory Season 3, Episode 13
Be it noogies, swirlies or the CLASSIC,
"Why are you hitting yourself?"
The Big Bang Theory Season 3, Episode 2