One Sunday morning George burst into the living room and said, â€˜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, George's dad took him aside, â€˜Son, I have to talk with you. Look at your mother, George. She and I have been married 30 years, she's a wonderful wife and mother, but, she has never offered much excitement in the bedroom, so I used to fool around with women a lot.â€™ â€˜Susan is actually your half sister, and I'm afraid you can't marry her.â€™
George was brokenhearted. After eight months he eventually started dating girls again. A year later he came home and very proudly announced, â€˜Diane said yes! We're getting married in June.â€™
Again his father insisted on another private conversation and broke the sad news. â€˜Diane is your half sister too, George. â€˜I'm awfully sorry about this.â€™
George was livid! He finally decided to go to his mother with the news his father had shared. â€˜Dad has done so much harm. I guess I'm never going to get married,â€™ he complained. â€˜Every time I fall in love, Dad tells me the girl is my half sister.â€™
â€˜Hee hee,â€™ his mother chuckled, shaking her head, â€˜Don't pay any attention to what he says. He's not really your father.â€™