An inventor was finally successful in making the machine of his dreams. Excited, he called out his son and said, "Son, I have toiled for twenty inventing this machine that if you put a pig at one end of this machine and sauges will come to the other end." The son replied, "Duh, dad. That’s so yesterday. Why don’t you invent a machine in which if you put the sausage at one end of the machine and a pig will appear at the other end?" The father said," Oh son, I have already invented that. It was twenty years ago when I put my sausage into your mom’s machine and out come a pig of a son like you!"