I’m reminded of a story about a boy who asked his father where he came from. The father swallowed hard, but knew that this question would eventually come, so with the aid of tasteful diagrams he explained the mechanics of sexual reproduction to his son.
Some time later, the son interrupted his father’s explanations to say,
“Dad, this is interesting, but Jimmy in school said that he came from Pittsburgh. Where did I come from?”
The moral of the story is to understand a child’s actual question, and not give them more information than they may be asking for…