Childbirth is a
NATURAL, beautiful...
The Big Bang Theory Season 7, Episode 11
Also, curry's a NATURAL laxative and
I don't have to tell you that, you know...
The Big Bang Theory Season 1, Episode 1
It's NATURAL to be
a little cranky when you have...
The Big Bang Theory Season 5, Episode 12
Yeah! Natural selection at work.
The Big Bang Theory Season 1, Episode 15
And you're quite certain
he died of a NATURAL illness?
Game of Thrones Season 1, Episode 4