All they have to do is cut off his head
and check his BRAIN.
The Big Bang Theory Season 9, Episode 15
Well, some people think
the sexiest organ is the BRAIN.
The Big Bang Theory Season 9, Episode 8
Oh, BRAIN lesions
are fascinating.
The Big Bang Theory Season 7, Episode 1
that the BRAIN itself
is in two different quantum states,
The Big Bang Theory Season 10, Episode 20
I drive you to work every day,
my BRAIN must look like the Hulk.
The Big Bang Theory Season 10, Episode 22