slip out of the NINTH floor,
and go on a little adventure?
The Big Bang Theory Season 5, Episode 18
Ninth?
The Big Bang Theory Season 5, Episode 15
did this as our science fair
projects in NINTH grade.
The Big Bang Theory Season 11, Episode 13
Ninth time's the charm.
The Big Bang Theory Season 6, Episode 5
with my NINTH favorite person.
The Big Bang Theory Season 5, Episode 15