So a father buys a lie detecting robot that slaps people when they tell a lie
he decides to test it out on dinner
So dinner comes, and the father asks his son what he did today
His son says "I did some school work", and the robot slaps the son
Father says he knows the son is lying, and then the son retorts "Fine. I went to my friends house and watched Toy Story"
The robot slaps the son again, who finally fesses up that he watched research with his friend.
Father shouts in surprise, and says that when he was his sons age, he didnt even know what research was.
The robot slaps the father, and the mother says to father "Sounds like hes your son"
Then the robot slaps the mother.