
I find the notion of romantic love to be
an unnecessary CULTURAL construct...
The Big Bang Theory Season 4, Episode 5

While you do provide
a certain CULTURAL diversity...
The Big Bang Theory Season 2, Episode 13

We'd have
the same CULTURAL background...
The Big Bang Theory Season 1, Episode 2

I think it's CULTURAL.
The Big Bang Theory Season 11, Episode 10

...the CULTURAL convention
is to bring them hot beverages.
The Big Bang Theory Season 1, Episode 6