For some reason I've just remembered trying to get behind the great big old 'wireless' that was plugged into the mains, to see the little people who were talking!
Oh, the disappointment at seeing only wires and mini light bulbs! Don't suppose I can have been more than 3 - maybe not even that.
As let-downs go, it was much greater than eventually finding out about Father Christmas/the tooth fairy, though of course I was a lot older then.
Any more?
sticky labels on apples - remove before washing!
To obliterate your address on packaging
Tales about "stingy" guests and hosts.