A man with a gun goes into a bank and demands money.

Once he is given the money, he turns to a customer and asks, 'Did you see me rob this bank?'

The man replied, 'Yes sir, I did.'

The robber then shot him in the temple, killing him instantly.

He then turned to a couple standing nearby. He asked the man, 'Did you see me rob this bank?'

The man replied, 'No sir, I didn't, but my wife did.'