I don't like to crawl on the tile

Jax really dislikes crawling on the tile, he will of course to get to the door stopper and to play with the blinds, also if I'm not watching he makes a dash to get into my office before I notice him. I love how he stands on his feet to walk/crawl. The other day he was doing this and realized that if he pushed back just a bit he could fall on his bum. Where did he get this funny personality?