There was this guy who had a cool-looking robot that did everything around the house. He cleaned, cooked, and even walked the dogs. The cool thing was that it could function as a lie detector.

One day, the man's son, Little Johnny, was home late for dinner. The man asked "Why are you late, Johnny?"

"Me and Joseph were studying for a quiz tomorrow," he responded. Just then the robot smacked him in the back of the head to show he was lying.

"What were you really doing?" father asked.
"We watched a funny movie"
Johnny gets smacked again

"OK, we were watching a dirty movie."

The father says "Wasn't that better, Johnny? All you needed to do is tell the truth. That is what I do."

The robot smacks the father's head.

Yhe mother steps in and says "Go easy on him, Danny. After all, he is your son."

The robot then smacks the mother.