Oh Huckleberry....

Wow. So in chapter 15, Huck really tricks Jim once again. But my question is..why does Huck trick him? Or confuse Jim? Does Huck merely think it is funny? Or is he just simply bored and being a typical 13 year old boy? What are your thoughts peoples? P.S. Huck does feel really sorry by the end of the chapter...about teasing Jim.