...the one where the frog has its tongue
stuck to the underside of an AIRPLANE.
The Big Bang Theory Season 6, Episode 19
Why would I touch her?
She's covered with AIRPLANE germs.
The Big Bang Theory Season 4, Episode 6
You don't want to float
weightless in an AIRPLANE.
The Big Bang Theory Season 12, Episode 15
"Like blue ice
falling out of an AIRPLANE lavatory," yep.
The Big Bang Theory Season 2, Episode 2
to a hangar and letting
the AIRPLANE fly in.
The Big Bang Theory Season 12, Episode 17