New words in the past few days: "no no no" (while wagging finger back and forth, usually said right before doing something he knows he shouldn't), "silly", A, B, C, D, and E (especially E), "elbow" (pronounced "belbow"), "choo choo", and of course, "sorry".

(I don't think he understand the idea of being sorry, but he's heard the word and apparently he likes it a lot.)