My little dude is so smart.
Daddy bought him this gigantic bolt and hex nut so that he can play around with hardware without potentially choking on it. He was playing with it today and I held out the bolt and said, "What is this?" He said, "A bolt." Average intelligence.
Then I held out the hex nut and said, "What's this?" expecting him to say, "A nut."
He said, "A hexagon."