It's so cute, when I first saw it I thought he was pressing a button that was throwing the ball for him! My sisters old dog (long gone now) had a good trick he'd take his ball up to the top of the stairs, drop it and then chase down to try and catch it before it got to the bottom, it kept him amused for hours!
People who are wrong are just as sure they're right as people who are right, the only difference is they're wrong