
Sheldon, she just
got off the PLANE.
The Big Bang Theory Season 5, Episode 6

and the shoes,
the PLANE tickets.
The Big Bang Theory Season 12, Episode 23

Come on,
I spent an entire PLANE ride with you
The Big Bang Theory Season 10, Episode 22

Look, here's the...
the PLANE ticket you bought me
The Big Bang Theory Season 7, Episode 6

We forgot about you
until we were on the PLANE.
The Big Bang Theory Season 12, Episode 2