When I was about five, my 13 year old cousin had a Rubik's cube. He switched it up and left me alone (in part, I suspect, so I wouldn't be in his stuff). After about 20 minutes, I went into the kitchen where my parents were sitting at the table with my aunt and uncle - with the puzzle complete. I couldn't understand what all the fuss was about. It wasn't that hard.
My dad was proclaiming me a genius. A prodigy.