A man buys a lie detector robot.......

A man buys a lie detector robot which slaps people who lie. He decides 2 test it at dinner.Dad: Son, where were u today during school hours? SON: at School. Robot slaps son! Ok,I lied,I went to the movies. DAD: Which one?SON:Toy Story. Robot slaps son again!Ok, it was a day with pornstar. DAD: What? When I was ur age, I didn't even know what porn was..Robot slaps Dad!MOM: Ha ha! After all he's ur son. Robot slap mom