1/2 sisters

On Sunday morning George 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 the
wolrd.  She lives only a street away and her name is Susan Hoffman."

After dinner, George's dad took him aside and said, "Son, I have to talk to you.
Look at your mother, George.  She and I haev been married 30 years'she is
wonderful wife and mother, but, she has never offered much excitement in the
bedroom, so i use to fool around alotwith woman.  Susan Hoffman is actualyl your
half sister, so I'm afraid you can't marry her."

George was heartbroken,  After eight months he started dating girls again. A
year later he came home and very proudly annouced, "Diane said yes! We're
getting married in June.

Again his afther insisted on another private conversation and broke the news:
"Diane, is your half sister too, George.  I am awfully sorry about all this."

George was licid!  He finally decided to share this with his mother. "Dad has
done so much harm.  I guess I'm never going to get married," He complained.
Everytime I fall in love, Dad tells me the girl is my half sister."

"Ha,"his mothers chuckled, shaking her head, "Don't pay any attention to
what he says.  He's not really your father."