Jack goes to his friend Mike and says, "I'm sleeping with the minister's wife. Can you hold him in church for an hour after services for me?"
The friend doesn't like it but being a friend, he agrees.
After services, he starts talking to the Reverend, asking him all sorts of stupid questions, just to keep him occupied.
Finally the Minister gets annoyed, and asks Mike what he's really up to.
Mike, feeling guilty, finally confesses, "I'm sorry Sir, but my friend is sleeping with your Wife, right now even as we stand here....he asked me to keep you occupied."
The Minister smiles, puts a brotherly hand on Mike's shoulder and says, "Son, you’d better hurry home to your Wife....Because my Wife died five years ago."