robot lie detector

[pator]

A father decides to buy a robot lie detector. He tries it out on his son and asks him "what did you do today at school" Son replies "geography"
Robot slaps the son. Ok I played truant and watched a sci fi movie. Robot again slaps son. Son owns up to watching porn.
Dad says "I never watched that when I was your age" Robot slaps father.
Mother says " he is definitely your son".
Robot slaps mother.

[Old_Geezer]

They need to take it back under the guarantee.

[starone]

hee-hee.