
Physika means the science
of NATURAL things.
The Big Bang Theory Season 3, Episode 10

of all the different types
of NATURAL disasters.
The Big Bang Theory Season 11, Episode 13

It's NATURAL to be
a little cranky when you have...
The Big Bang Theory Season 5, Episode 12

Look, Mr. Natural, I'm not
gonna let you sabotage this thing.
Breaking Bad Season 5, 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