"Oh that's good, Joe. That was a good idea. That's much better," she said as she moved her ass in a circular motion and pushed back toward him. "Give me all of it, kind sir!"

Joe fed his pulsing rod of man-meat slowly into his sister's eagerly receptive bunghole until she was completely impaled. He stopped and grunted with pleasure. "This feels amazing, Little Sister. You're so tight!"

"I think I'm going to cum, Joe," she whispered. "It feels so different, though. I don't know for sure..."

Joe placed a hand on one of her perfectly rounded butt-cheeks as he saw his sister's mouth open in a silent scream and...