Lie detector robot

A father
buys a lie detector robot that slaps people when they lie.

He decides
to test it out at dinner one night.

The father
asks his son what he did that afternoon.


The son
says, "I did some schoolwork."

The robot
slaps the son.

The son
says , "Ok, Ok. I was at a friend's house watching movies."


Dad asks,
"What movie did you watch?"

Son says,
"Toy Story."

The robot
slaps the son.

Son says,
"Ok, Ok, we were watching porn."


Dad says,
“What? At your age I didn't even know what porn was."

The robot
slaps the father.

Mom laughs
and says,

“Well, he
certainly is your son."

The
robot slaps the mother.

Robot
for sale.