WILLIAMS MARRIAGE

One Sunday morning, William burst into the living room and said, ""Dad! Mom! I have some great news for you! I am getting married to the most beautiful girl in town. She lives a block away and her name is Susan.""
After dinner, William-s dad took him aside. ""Son, I have to talk with you. Your mother and I have been married for thirty years. She-s a wonderful wife but she has never offered much excitement in the bedroom, so I used to fool around with women a lot. Susan is actually your half-sister, and I-m afraid you can-t marry her.""
William was heartbroken. After 8 months, he eventually started dating girls again. A year later, he came home and very proudly announced, ""Diane said yes! We-re getting married in June.""
Again his father insisted on another private conversation and broke the sad news. ""Diane is your half-sister too, William. I-m awfully sorry about this.""
William was furious! He finally decided to go to his mother with the news.

""Dad has done so much harm. I guess I-m never going to get married,"" he complained. ""Every time I fall in love, Dad tells me the girl is my half-sister.""
His mother just shook her head. ""Don-t pay any attention to what he says, dear. He-s not really your father.""