A father decided to buy a robot that detects lies and bring it to the dinner table. The father asks the son what did you do today? Son said we watched a movie, Father ask "what movie?" Son said toy story - Robot slaps the son.. ok ok son says we were watching porn.. PORN! Father says... when I was 15 I had no idea what porn was... Robot slaps the father... the Mother chuckles, and says well, he certainly is your son... Robot slaps the mother.