[chbot] Robotic Lie Detector

[WHW]

Who could do one of these?

A father buys a LIE DETECTOR ROBOT that slaps people when they tell a
lie; he decides to test it at dinner:
Dad: Son, did you go to school today?
Son: Yes
Robot slaps son!
Son: Okay! I watched a dvd at Rob's house!
Dad: What dvd?
Son: Toy Story
Robot slaps son!
Son: Okay! It was porn!
Dad: What? At your age I didn't know what porn WAS!
Robot slaps Dad!
Mum (laughing): He's certainly your son!
Robot slaps mum