Cassandra, sitting and tickling

Cassandra binds her slave on the high bench, then she mounts his chesst like a horse, lifts  feet of the ground and sits there with all her weight.

For increasing the action, and with it his discomfort, she begins to tickle his ribs, so he runs easy out of air with her 80 kg's on his chest.

Turning arounnd, sitting reverrs this time more on the face, she continues with tickling...