(Starts around 40 seconds in.)
I have no idea what is going on here, but even if I did, I wouldn't tell you. Some things are just best left unexplained.
So in case what you were wondering what Kaka has been up to since the season ended, well, this is it. He's dressing like a rock and roll catalog model, eating a hot dog he clearly doesn't enjoy, waiting for a bus and playing air guitar on a notebook in a TV show dream sequence. In other words, he's having way more fun than anyone playing for the Netherlands.