Daft but made me smile . . .

[Sweder]

So I was in my car, and I was driving along, and my boss rang up, and he said 'You've been promoted.' And I swerved. And then he rang up a second time and said 'You've been promoted again.' And I swerved again. He rang up a third time and said 'You're managing director.' And I went into a tree. A policeman came up and said 'What happened to you?' And I said 'I just careered off the road.'

Strange, isn't it. You stand in the middle of a library and go 'Aaaaaaagghhhh' and everyone just stares at you.
Do the same thing on an aeroplane and everyone joins in.