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

Tim, you be first, she said. What does your father do all day?

Tim stood up and proudly said, He is a doctor.

That is wonderful. How about you, Sarah?

Sarah shyly stood up, scuffed her feet and said, My father is a mailman.

Thank you, Sarah, said the teacher. What about your father, Billy?

Billy proudly stood up and announced, My daddy plays the piano in a whore
house.

The teacher was horrified and promptly changed the subject to geography. Later
that day she went to Billys house and rang the bell. Billys father answered
the door. The teacher repeated what his son had said and demanded an
explanation.

Billys father said, Well, I am actually a lawyer. But can I explain a thing
like that to a seven-year-old boy?