There comes a time when a woman just has to trust her husband... for example:

A wife comes home late at night, and quietly opens the door to her bedroom.   From under the blanket, she sees four legs instead of two.  

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

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

"Hi Darling", he says, "Your parents have come to visit us, so l let them stay in our bedroom.   Did you say ‘Hello’..??”