A primary school teacher was asking his students what their parents did for a living. “Tom, you be first. What does your mother do all day?” Tom stood up and proudly said, “She’s a doctor.”
“That’s wonderful. How about you, Amy?” Amy shyly stood up, scuffed her feet and said, “My father is a postman.” “Thank you, Amy” said the teacher.
“What does your father do, Johnny?” Johnny proudly stood up and announced, “My dad plays piano in a whorehouse.”
The teacher was aghast and went to Johnny’s house and rang the doorbell. Johnny’s father answered the door. The teacher explained what his son had said and demanded an explanation. Johnny’s father said, “I’m actually a system programmer specialising in TCP/IP communication protocol on UNIX systems. How can I explain a thing like that to a seven-year-old?”