Grannies Yolanda and Mona are taking out all their frustrations on Shelly's poor self. they mummify the sub and tie a rope around her body just to be sure that she won't escape. they then take turns at humiliating their sub by rubbing their asses on her, bouncing and shaking and pounding her body with their full weight and thick fat thighs. the doms are making sure that the sub is completely used and serves them to their satisfaction.