A man buys a lie detector robot that slaps people who lie. He decided to test it at dinner:
Dad: Son where were you today during school hours?Son: At school (robot slaps son)
Son: Okay I went to the movies!
Dad: Which one?
Son: Harry Potter (robot slaps again!)
Son: Okay I was watching porn.
Dad: What? When I was your age I didn't even know what porn was! (Robot slaps dad)
Mom: Ha ha ha ha ha ! After all he is your son! (robot slaps mom)
