If an adult takes videos of a clothed child not being seductive in the eyes of the law, is it still illegal?

If a child has a childish accident on Santa Claus's knee, it Santa guilty of anything? What if Santa asked the child to do so? Is Santa guilty of anything?

If a child wiggles her barefoot toes in front of an adult's camera, is that illegal? What if the adult asked the child to do so? Is the adult guilty of anything?

Where is the line drawn?

There is a saying, if it can't be expressed in terms of numbers, it's an opinion.

Can an adult be guilty of violating someone's opinion?