You are so right. My grandson since he was around three greets everybody with a friendly hello and conversation of some sort; often sticks his hand out for a shake. He developed this style on his own and at seven is still doing it. Takes some people aback but most folks chuckle and respond in a friendly manner. Adults love it and other kids don't know what to make of it. But, he persists until he gets a response. He is so upbeat. I am grinning as I write this because my minds'eye can see him doing his thing.