I was done with Latin by FIFTH grade.
The Big Bang Theory Season 3, Episode 2
...to be picked for a game in FIFTH grade,
I'm sure you do suck.
The Big Bang Theory Season 8, Episode 3
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
I study the brain, the organ responsible
for Beethoven's "Fifth Symphony."
The Big Bang Theory Season 4, Episode 24