When he started school in September, he discovered an interest for numbers. On occasions he'd actually ask for "sums", that is, easy addition and subtraction questions. And he says his favourite number is 199. He thinks it is hilarious to start counting 1, 2, 3.. and then to drop 199 in the middle of it. I am not implying that he is gifted or anything like that, just that he likes numbers. And that's cool.