I was kidding with my daughter today, and made up a silly joke. She immediately went and told the joke to my wife.
I said to this very precocious almost-6-year-old, "Hey, you're stealing my material!"
She said, wisely, "Daddy, isn't it more important that people hear the joke and laugh than who said it?"
We then got into the philosophy discussion, such as one can with a child, about people who make stuff and only want money versus people who create things and want to share them with the world. She's still on the side of getting material heard.