I was having a beer with a friend last night and we were talking about flying as we both travel a lot with work, and he had a great one for here.
He was living in Tokyo and on a JAL flight, and there was a group of salarymen on the flight and after take off the CC came through and dispensed a round of beers, apparently saying if the pax wanted more later to ring for attention.
A short while later one of the more refreshed gents stood up, prodded the button above his head which was in fact the light that comes on after you press the correct crew call button, and put his mouth to the fresh air blower and called into "please bring me more beer" or words to that effect!
Perhaps not a frequent flyer.