(dirty anecdote follows)
A friend in the airline industry tells me that on a flight today they notice that the lavatory has been occupied for a very long time. Preparations for landing had begun and the flight attendants were knocking on the door for a while. Finally they disengaged the lock and stumbled in where there were two girls – one girl had her pants down and well… you can guess the rest.
Didn’t they see that the captain had turned off the muff-diving sign?
“Today’s flight will feature complimentary in-flight pussy.”
It was an hour flight.
(Keep in mind that the nearest exit may be behind you.)