I think
it's only the FIFTH stage
The Big Bang Theory Season 12, Episode 24
but I spent most of FIFTH grade
with my head in a toilet.
The Big Bang Theory Season 7, Episode 2
It's more likely that you will spend
your careers teaching FIFTH graders...
The Big Bang Theory Season 2, Episode 6
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