The Smiths were unable to conceive children... and decided to use a surrogate father to start their family. On the day the surrogate father was to arrive, Mr. Smith kissed his wife and said, ""I'm off. The man should be here soon"" Half an hour later, just by chance a door-to-door baby photographer rang the doorbell, hoping to make a sale. ""Good morning, madam. I've come to...."" ""Oh, no need to explain. I've been expecting you,"" Mrs. Smith cut in. ""Really?"" the photographer asked. ""Well, …