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