
I study the brain, the organ responsible
for Beethoven's "Fifth Symphony."
The Big Bang Theory Season 4, Episode 24

you wouldn't have been FIFTH
on my list.
The Big Bang Theory Season 12, Episode 7

There's only three people in this house,
and you'd still be my FIFTH guess.
The Big Bang Theory Season 10, Episode 10

You, uh, moving into the apartment
on the FIFTH floor?
The Big Bang Theory Season 6, Episode 8

I think
it's only the FIFTH stage
The Big Bang Theory Season 12, Episode 24