He was first working on reading his book, but then decided to put the crayon away so he could start wiggling and dancing.
His next trick was to show of his little "Thumbs Up" move.
Then he really started shaking. Well, at least until he realized that everyone was watching and went back to the reading.
Fortunately, he came back for an encore and finished it off strong with the "Zombie Baby" dance. Maybe he should remake Thriller.