Chelsea , Clinton, Hillary

This one is sickeningly cute:
One Sunday morning Chelsea burst into the living quarters at the White House
and said, "Dad! Mom! I have some great news for you! I am getting married to the
greatest hunk in Washington. He lives in Georgetown and his name is Matt."
After dinner, the President took Chelsea aside. "Honey, I have to talk with
you. Your mother and I have been married a long time. She's a wonderful wife but
she's never offered much excitement in the bedroom, so I used to fool around
with women a lot. Matt is actually your half-brother, and I'm afraid you can't
marry him." Chelsea was heart-broken.
After eight months she eventually started dating again. A year later she came
home and very proudly announced, "Robert asked me to marry him! We're getting
married in June." Again her father insisted on another private conversation and
broke the sad news.
"Robert is your half-brother too, honey. I'm awfully sorry about this."
Chelsea was furious!
She finally decided to go to her mother with the news. "Dad has done so much
harm. I guess I'm never going to get married," she complained. "Every time I
fall in love, Dad tells me the guy is my half-brother."
Hillary just shook her head. "Don't pay any attention to what he says, dear.
He's not really your father."