A father buys a lie detector robot that slaps you when you lie.
He decides to test it out on his son at the supper table.
The father asks the son, "Where were you last night?"
Son replies, "I was at the library."
The robot slaps the son.
- "OK! I was at a friend's house, watching a movie," the son says.
"What movie?" -the father says. "Toy story."
Robot slaps the son. "OK. it was porn," -cried the son.
Father yells, "What? When I was your age, I did not know what porn was."
The Robot slaps the father.
The mother laughs and says, "He certainly is your son.
The Robot slaps the mother

For Sale,
Pre-owned robot, like new condition.

I've always thought it would be just some kind of wonderful if we could just find the "Siege Perilous" and install it in DC...