Because Michael is going to head start in a few weeks, and due to a strange mix up back in January, he had to get caught up on some vaccines.
Here he is before, drumming on a cup.
"Turn it around!"
I don't know where he got this but he loves giggling and making this face while seeing himself. He's not recalling laughing at himself, he's putting on a show.
Five! Count 'em, 1-2-3-4-5!!! There was 1 combo vaccine, so 6 vaccines in all! Look at the smiles!!