A grade school teacher was asking students what their parents did for a living.

“Tim, you be first,” she said. “What does your mother do all day?”

Tim stood up and proudly said, “She’s a doctor.”

“That’s wonderful. How about you, Amie?”

Amie shyly stood up, scuffed her feet and said, “My father is a mailman.”

“Thank you, Amie,” said the teacher. “What about your father, Billy?”

Billy proudly stood up and announced, “My daddy plays piano in a whorehouse.”

The teacher was aghast and promptly changed the subject to geography.

Later that day, she went to Billy’s house and rang the bell. To her surprise, Mark Zuckerberg answered the door. The teacher explained what his son had said and demanded an explanation.

Mark said “I’m the CEO of a $500 billion company that runs a massively additive social media service and is about to unleash massively addictive virtual reality service that will probably contribute to the already divisive politics in the world and result in the downfall of society. How can I explain a thing like that to a seven-year-old?”