
Mrs. Wunch in FOURTH grade.
The Big Bang Theory Season 9, Episode 23

...Teens for Jesus
Fourth of July hoedown didn't count.
The Big Bang Theory Season 4, Episode 1

Except for the FOURTH one,
The Big Bang Theory Season 7, Episode 4

I'll be the FOURTH woman ever
to win a Nobel in physics.
The Big Bang Theory Season 12, Episode 19

...if you would be the FOURTH member
of our "Halo" team.
The Big Bang Theory Season 1, Episode 7