
I'm just a harmless little girl
with military GRADE spy equipment.
The Big Bang Theory Season 9, Episode 8

Pink wine and pizza bagels!
It's like eighth GRADE all over again!
The Big Bang Theory Season 10, Episode 13

I was done with Latin by fifth GRADE.
The Big Bang Theory Season 3, Episode 2

In ninth GRADE, the girls put
Rogaine in my hand lotion.
The Big Bang Theory Season 5, Episode 11

I was only being polite.
Pemberton is a GRADE A weasel.
The Big Bang Theory Season 12, Episode 21