A flight attendant friend of mine and her boyfriend had been playing a little
game, where they would hide condoms in each others pockets, briefcases,
lunches etc., to have them revealed at unexpected times.

One morning, shortly after taking off on a 3 hour flight, the flight
attendant was asked for aspirin, by a man with a headache. Recalling the
packet of aspirin she usually kept in her left pocket, she took it out,
placed it on the mans fold out table, and turned to pour him a glass of water.

When she turned around again, the man was staring, mouth open, at the
packet before him. He managed to stammer Sorry Miss, I really DO have a
headache. On discovering her mistake, she turned several shades of red,
and scurried off to hide in the crew cabin.

Eventually, she had to resume her duties, and on each pass down the aisle,
she got a wink and a smile from the man with the headache.