Ninth?
The Big Bang Theory Season 5, Episode 15
In NINTH grade, the girls put
Rogaine in my hand lotion.
The Big Bang Theory Season 5, Episode 11
with my NINTH favorite person.
The Big Bang Theory Season 5, Episode 15
Ninth time's the charm.
The Big Bang Theory Season 6, Episode 5
did this as our science fair
projects in NINTH grade.
The Big Bang Theory Season 11, Episode 13