HI!!!!!!

So this is how my son says hello to people now days. I don't know how it got started, nor who taught him, but he just does it. It's cute. It's hilarious. What can I do???

When he was a baby we're talking six months more or less. He used to say hello to people by opening his mouth as wide as it would go. Believe me it was wide, he has his father's mouth. But I decided it was because when people would stop us and coo at my baby the first thing they would do is open their mouth and eyes wide, to see if they could get him to smile. So he started repeating the gesture to say hi. It was quite funny, but this, this is his own creation.