Expert barber

I tried a new local barber today. Once again a Greek Cypriot. When it came to the final brandishing of the mrror to show me the back of the neck I said that this was the worst moment. 'Why?' he asked. I said I did not like to see the thinning top. 'Can you see it?' he replied. I could not. He told me the first thing his father taught him was never to show the customer the balding spot. I said his father was a wise man. I am not vain but I do not like the bald spot.