
...like blue ice
falling out of an AIRPLANE lavatory.
The Big Bang Theory Season 2, Episode 2

Why would I touch her?
She's covered with AIRPLANE germs.
The Big Bang Theory Season 4, Episode 6

to a hangar and letting
the AIRPLANE fly in.
The Big Bang Theory Season 12, Episode 17

Maybe an AIRPLANE headed
for a mountainside.
The Big Bang Theory Season 3, Episode 2

...the one where the frog has its tongue
stuck to the underside of an AIRPLANE.
The Big Bang Theory Season 6, Episode 19