A salesman came to Bill’s door, selling books. Now Bill’s wife is at work and Bill is usually the one who does most of the house chores. Well, Bill answered the door wearing his apron and the salesman goes into his sales pitch about how this one book he has would do half of Bill’s work for him.

Bill ponders this for a minute and then he says, „Are you sure this book will do half of my work for me?”

„Yes, Sir. Absolutely!” answers the salesman.

Bill said, „Well, in that case I reckon I’ll take two of them!”