Jenn whimpered as her Master suddenly stopped moving, buried deep inside of her. A yelp escaped her lips as her ass was slapped, feeling his length against her walls as she clenched around him. It wasn't the easiest position with which to fuck herself but that was probably the point. She would need to give it all the more effort to prove her desperation to be filled with his precious seed.
The slave moved her hips back and forth, thrusting backwards hard as she began to fuck herself for him. She quickly picked up speed and momentum, her sore ass slapping against his balls making her cry out in a mixture of pain and pleasure.