The slave is on a gymnastic ball on his back, ready for receiving some nice Lady Amy-treatement.
She steps over him, teases him with some ass shaking... "watch!" and drops down on his face.
She plays with him several games, most are a little painfull... Yes she's a sadist!
Placing her bony ass right on his larynx... hear the noise if she begins to bounce.
Then she comes to the nipples, and applies some clamps and sits again on the face.....