Wife comes home early from a business trip, gets home the night before she was supposed to. She quietly opens the door to her bedroom. From under the covers she sees four legs instead of two. A man and a woman. She reaches for a baseball bat and starts hitting the blanket as hard as she can. Once she is done, she goes to the kitchen to have a stiff drink. As she enters, she sees her husband there, reading the paper.
"Hi Darling" he says, "Your parents have come to visit us, so I let them stay in our bedroom. Did you say hello yet?"
Pete
.