This was taken from the Times newspaper.
A 98 year old woman in the UK wrote this to her bank. The bank manager thought it amusing enough to have it published in the Times.
Dear Sir,
I am writing to thank you for bouncing my cheque with which I endeavoured to pay my plumber last month.
By my calculations, three nanoseconds must have elapsed between his presenting the cheque and the arrival in my account of the funds needed to honour it. I refer, of course, to the automatic monthly deposit of my Pension, an arrangement, which, I admit, has been in place for only thirty eight years.
You are to be commended for seizing that brief window of opportunity, and also for debiting my account