I used to do contracr maintenance work on aircraft, and once a bunch of us were returning from a job in Germany. The plane was a scheduled flight on a small (50 seat or so) turbo-prop aircraft, and it was a BUMPY flight.
I am fairly well travelled, and working on aircraft made me more confident than most of flying, but the turbulence started to get so bad that I was getting nervous. Nobody except the flight crew were allowed to unfasten their seatbelts, and even they were being thrown about as they tried to move around. It was by far the worst flight I have been on.
So anyway, just as things were getting to the peak of shittiness, one of the stewardesses made her way to one of my colleagues sitting across the aisle, and said, in a hushed tone "Excuse me sir, is it true that you guys are aircraft engineers? We have a slight problem out the back, and thought you might be able to help".
I honestly thought we were going to die. That the bumpiness was not down to turbulence, but some flight system had gone AWOL. I didn't know what the fuck any of us would be able to do on unfamiliar equipment with no documentation, no spares and no tools, but sure enough my colleague went off with the stewardess and disappeared through the door out of the cabin.
10 mins late he was back, and of course we were keen to know what the problem was and if he was able to do anything about it.
The "problem" turned out to be a ratchet strap on one of the cupboard doors in the galley was jammed so they couldn't get the snacks out! The flight continued to be horrible, and the snacks were predictably shit.