If you're happy & you know it!

Will loves to sing and dance to his music. Here he is being quite calm about this dance.

You'll notice that he points to his face and makes a cheesy smile when the song says, "...if you're happy and you know it, then you're face will surely show it..." but he's not always on queue.

The song also says to say "Amen" which he likes to shout, usually.

Toward the end, the song is asking him to do all three (clap, stomp, shout) and this is apparently too much for him and he sits down - staring off into space - then suddenly jumps up to attack the camera.

He's a 'different' child.