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A wiife comes home late at night, tiptoes up the stairs and quietly opens
the door to her bedroom. At the foot of the bed she sees four legs under
the blanket, instead of two.

She reaches for a baseball bat and starts hitting the blanket as hard as she
can. Once she's done, with a sense of pride and satisfaction, she goes into
to the kitchen to have a drink.

As she enters, she sees her husband sitting there, reading a magazine.

“Hi, Darling,” he says. “Your parents have come to visit us, so I let them stay
in our bedroom."
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