He decided to confront the mother of the baby about his discovery. He passed the baby wrapped in a blanket to the mother and explained to her; "I don't really know how to tell you this, but your son has a brass screw instead of a belly button." "You're kidding!" the mother replied, aghast by the news. "No," stated the doctor, "I'm not. I'm ever so sorry." "Come in son.." The boy was ecstatic, he stood up, rejoiced, and then his bum fell off.