A man buys a lie detector robot that slaps people who lie.
The man decides to try it out at dinner.
Dad: Son, where were you during school hours?
Son: At school.
The robot slaps the son.
Son: Okay! I was at my friends house watching DVD!
Dad: What’s the title of the movie?
Son: Kung Fu Panda
The robot slaps the son again.
Son: Okay! It was a XXX rated sex film!
Dad: What!!? When I was your age I didn’t even know what an erotic or X rated movie was.
The robot slaps the dad.
Mom: Hahahaha!!! He is YOUR SON after all!!! Hahahaha!!!
The robot slaps the mom.