This is my absolute favourite, thanks to Barry Crier .....
A man and his wife were waiting for a bus, when they saw a man at the bus stop on the opposite side of the road. 'That looks like the Archbishop of Canterbury over there,' says the wife. ' No, I don't think so', replies her husband
'Yes, yes it is,' says the wife, 'Go on, go over there and see if it is,' she adds.
'The husband crosses the road and asks the man if he is indeed the Archbishop of Canterbury.
The husband crosses back to his wife who asks 'What did he say? Is he the Archbishop of Canterbury?'
'He told me to f**k off,' says the husband.
'Oh no,' replies the wife, 'Now we'll never know'.'