Your tuchis is not
leaving this PLANET!
The Big Bang Theory Season 5, Episode 5
You think this PLANET you're looking for
has an atmosphere that supports life?
The Big Bang Theory Season 4, Episode 9
...which would be evidence
of a PLANET orbiting it.
The Big Bang Theory Season 4, Episode 9
...when the PLANET Krypton exploded.
The Big Bang Theory Season 2, Episode 11
or thinks the moon is a PLANET.
The Big Bang Theory Season 5, Episode 21