My favourite so far!!
Not something i overheard, but rather something i witnessed about 16years ago. When Airtours (the Package Holiday company) were going strong in the early 90's, many of their very late night departures were geared towards the "cheaper" end of the market. On a particularly quiet evening we were all suddenly disturbed in MAN Airport check-in hall by a whole load of commotion coming through the main doors.
A large family of maybe 10, adourned in their latest Shell Suits, stumbled through with each suitcase tied up with string, and every Pot & Pan from their kitchens tied onto said string, and their kettles and toasters in hand luggage!!
They were on their first venture out of the UK and they thought that Self-Catering meant exactly that!!!
To add to the hillarity of the situation, they mis-read their tickets and had arrived exactly 24 hours too early!!
Its not as fun as it used to be......