Her heart raced as she felt his rough fist slowly enter her, stretching her tight opening wider than she had ever imagined. She let out a moan of both pain and pleasure, arching her back as he began to thrust in and out. With every stroke, she could feel his knuckles grazing against her inner walls, sending shivers down her spine. The sensation was overwhelming, and she couldn't help but beg him for more. He grabbed her hair, pulling her head back gently, and began pounding into her harder, growling words of encouragement. Her eyes rolled back in her head, and she let out a long, low groan. With a sudden force, he withdrew his fist, causing her prolapsed ass to gape open, revealing her tightly stretched sphincter muscle. He went back for another round, this time taking his time to fill her He went back for another round, this time taking his time to fill her up more thoroughly.