... is a natural inclination that children have.
This weekend I found myself with The Boy and some friends at the National Gallery of Art in Washington, DC. We were there less than thirty minutes before my son exuded his charm. He excitedly ran up to some random colossal piece of shit modern art sculpture that was sitting out in a corridor and starting running his hands all over it. I think he was going to ask me what it was when a security guard came over and sternly barked, "Son! Please do not touch the art!".
Embarrassed my son looked innocently up at the guard and apologized, "I'm sorry sir. I didn't know this was supposed to be art."