Pausing for a moment before completing the transaction before him, the teller in the bank peered at the young lady and asked, "I'm sure that this check is all right, but could you show me some positive identification?"
The young lady seemed about to turn away; then, in a faltering tone, she said, "I have a mole on my thigh just above the knee."
--Edmund Fuller (ed.), "2500 Anecdotes for all Occasions"