A man and his wife are out walking one day when they spot a bloke sitting alone in a bus shelter on the other side of the road
‘That looks like the Archbishop of Canterbury over there,” says the woman.’
‘Go and ask him if he is.’
The husband crosses the road and asks the man if he is indeed the Archbishop of Canterbury.
‘Fu off,’ says the man.
The husband crosses back to his wife who asks: ‘What did he say? Is he the Archbishop of Canterbury?’
‘He told me to fu off,’ says the husband.
‘Oh no,’ replies the wife, ‘now we’ll never know.’