Who gave us this little ball?

As I type this blog, Mike is holding Seth and continuously trying to hit me with the little basketball that Seth is holding in this picture. So far he has hit me in the head, on the arm and in the lap. He has also hit the screen and almost knocked over the lamp. He likes to see how many times he can hit me before I will get up and do something about it. He has really good aim! Excuse me while I go nail him.