Little Billy couldn't help noticing the fancy, expensive wristwatch that his friend, Danny, was wearing to school.

"Wow! That's a cool watch! It looks like it can do everything!" 10-year old Billy said.

"Yea, it's great! It tells time, it's a calendar, a calculator, a compass, it glows in the dark, it beeps and bloops and I pretend it's a walkie-talkie / cell phone!" beams Danny.
"Cool! Where can I get one, so we can prentend to talk to each other?"

"It's easy! All you have to do is run into your Mom and Dad's room when they're kissing and fooling around! They'll be so upset and will give you anything you want, just as long as you leave when they tell you to go away!" Danny tells him.

Excited about the prospect of getting a neat wristwatch so easily, Billy waits until his mother and new step-father go upstairs for some private time. He gives them about 5 minutes to let them get going, when all of a sudden he barges in, and runs up to their bed.

Sure enough they're naked and barely covered by a sheet, which his mother scrambles to cover herself with, while his confused step-father looks at his step-son, slightly annoyed.

"Hey, kid, what're you doing here?" his step-dad grumbles.

"I want a watch!" Billy happily proclaims.

To which the step-father shrugs his shoulders and replies, "Okay. Pull up a chair!"