An elderly couple are having dinner to celebrate their 75th wedding anniversary. The old man leans forward and says to his wife, "It has always bothered me that our tenth child never quite looked like the rest of our children. I want to assure you that these 75 years have been the most wonderful experience I could have ever hoped for and your answer will never take all that away. But... I must know, did he have a different father?"The wife drops her head, unable to look her husband in the eye, pauses for moment and then confesses. "Yes, he did.""Who was he?" he asks.The old woman drops her head, trying to muster the courage to tell the truth to her husband. She gulps down her wine and finally, she says, "You."