Where the shaking comes from. It was coming from a grey elephant without tusks. This is Horton. He’s an elephant. As he walks, he begins to bounce and bop, getting into a giddy groove. Wow, I feel really good right now. Maybe it's my new sense of purpose. He ushering himself to shake his booty and spin, which sends him growing so larger that transforms him into a morbidly obese boyfriend figure with a Whoa! Horton’s rear ends starts bouncing happily, while he obverses it, grows fatter and fatter to the point of becoming tall as a giant as well.