In this video I blow up my beach ball. Then ride it and grind on it a while. You'll see front and back views. Plenty of big bouncy ass . Finally, I slowly deflate it down while I grind on it. I've left out music in this one. That way, you hear all of the little squeaky squeaks on the plastic. You might notice red dots on my butt. This is from recording a balloon video just prior to this. They had polka dots that unknowingly transferred to my butt.