Twerking on LetMeJizz
It reads like a club move, but stripped of the music it becomes pure ass display aimed at the lens. A woman braces on her hands or knees and bounces her cheeks until they ripple, usually in a thong or nothing at all. The point is never the dance, it is the meat in motion and how long she can keep it shaking.
225 twerking videos here, all HD and all free. New ones go up daily, so check back if you don't find your scene first time around.