The lie detector robot
Dad: "Son, where were you today during school hours?"
Son: "At school." (Robot slaps Son) "Okay, okay I went to the movies."
Dad: "Which one?"
Son: "Toy Story 3." (Robot slaps son again) "Um, it was 'Day With A Porn Star'."
Dad: "What? When I was your age I didn’t even know what porn was!" (Robot slaps Dad)
Mum: "Ha Ha Ha! He's your son after all." (Robot slaps Mum)