Young and money-hungry
Many parents desire to raise their children to be kind and considerate toward others. Nobody wants to raise a bratty, self-entitled youngster, yet it happens all the time right under your nose. This child is simply attempting to push their luck for them to obtain what they want.
This does, however, indicate a sense of entitlement, whether or not their parents are willing to accept it. While he hovered his finger over his tooth for the tooth fairy to see, he requested that she take cash rather than the tooth. That was the kid who got to make their cake and eat it as well.