A nigerian man on his way from germany bought a lie detector machine. The machine is designed to dish out a slap immediately to anybody that tells a lie. When d man got home, he decided to test d machine. First he called his son, johnson where were u during school hours today?. Johnson: daddy i was in class( machine slaps johnson) oh sorry daddy i went to d cinema. His father asked him again, what kind of film did u watch?. Johnson: tom and jerry( machine slap him) sorry daddy, i watched blue film, his father said to him, when i was ur age i never watch blue films. (machine slaps johnson's father) at dis stage. Johnson's mother who was watching them intervened: u see, like father like son. Why wouldn't johnson watch blue film when he is ur son? (machine slaps mum)