The Lie Detector Robot

A father buys a lie detector robot that slaps you when you lie. He decides to try it on his son at dinner.

“Where were you last night?”

“I was at the library!” 
The robot slaps the son.

“OK I was at a friends house”

“Doing what?” Asked the father

“Watching a movie, Toy Story”
The robot slaps the son.

“OK it was porn!” Cried the son

Father yells “What! When I was your age, I didn’t even know what porn was!” 
The robot slaps the father.

The mother laughs and says “He certainly is your son!”
The robot slaps the mother.

Questions or Comments?