Murphy goes to his friend Pat and says...  

         "I'm sleeping with the Pastors      wife.

Can you hold him in church for an hour after services for me?"   
Pat doesn't like it, but being Murphy's longtime friend, he agrees.  

 
After the service, he starts talking to the Pastor, asking him all sorts of      stupid questions, just to keep him occupied.   

Finally the Pastor gets annoyed and asks Pat what he's really up to.   
Pat, feeling guilty, finally confesses to the Pastor.

"My friend is sleeping       with your wife right now, so he asked me to keep you occupied."

The Pastor smiles, puts a brotherly hand on Pat's shoulder and says  ...    

You'd better hurry home.  My wife died two years ago."