Timothy, my 7 year old dear son, is one of a kind. One morning after getting out of bed, he complained that there were "eye crumbs" in his eyes.
When Timothy was about 2 or 3, he was looking at the case of one of my husband's computer games. It had a skull with wings (It was an ad for another game) He didn't know the word skull, but he knew "bone" and he knew that the skull was a bone. So he said, "Mom, what is that flying bonehead?"
Once when he was about 2, we went into a sandwich shop. I let go of his hand for a minute and he had walked over to someone else's table to sit down with them and try and eat their food. He's always been my friendliest child. :)