Oiled ass JOI challenge

It's no secret that you love my firm round ass, and I delight in bouncing it right in your face knowing exactly how hard the sight is making you. How much more difficult to stop would it be if I oiled it up, letting it bounce and shake as I glide my hands over it in a tiny little thong? I dirty talk and tease, telling you I know exactly what effect it is having on you! Can you make it to the end of the video, or will you blow your load before it's all over?