I was done with Latin by FIFTH grade.
The Big Bang Theory Season 3, Episode 2
Uh, well, it's not
May the FIFTH...
The Big Bang Theory Season 7, Episode 22
It's more likely that you will spend
your careers teaching FIFTH graders...
The Big Bang Theory Season 2, Episode 6
You, uh, moving into the apartment
on the FIFTH floor?
The Big Bang Theory Season 6, Episode 8
There's only three people in this house,
and you'd still be my FIFTH guess.
The Big Bang Theory Season 10, Episode 10