Katrin's facesitting-bouncing-workout

The slave is on a gymnastic-ball, ready for to be ridden. Katrin steps over his face, decends her ass on his face.... the riding lesson can begin. She bounces up and down, her weight must feel like doubled, when she impacts on the face. Occasionalle she changes the positions, sits on his throat and chest, does some bouncers and moves again on his face.