Dr. Fowler, you would be
only the FOURTH woman
The Big Bang Theory Season 12, Episode 19
Except for the FOURTH one,
The Big Bang Theory Season 7, Episode 4
...if you would be the FOURTH member
of our "Halo" team.
The Big Bang Theory Season 1, Episode 7
Her apartment's on the FOURTH floor,
elevator is broken, you're gonna...
The Big Bang Theory Season 1, Episode 2
If it's half as much fun as One Times Ten to
the Fourth Bottles of Beer on the Wall, I'm in.
The Big Bang Theory Season 8, Episode 19