There's only three people in this house,
and you'd still be my FIFTH guess.
The Big Bang Theory Season 10, Episode 10
Before that, I was in college,
and before that I was in the FIFTH grade.
The Big Bang Theory Season 1, Episode 4
Leslie Winkle is the FIFTH girl
I've ever had sex with.
The Big Bang Theory Season 2, Episode 16
lt wasn't until the FIFTH grade
that l found out she liked me too,
Breaking Bad Season 4, Episode 8
...to be picked for a game in FIFTH grade,
I'm sure you do suck.
The Big Bang Theory Season 8, Episode 3