My girlfriend's sister indulges in self-pleasure while recovering from using her massive dildo

After a steamy encounter with my girlfriend, I found myself alone in her house. As I was about to leave, I heard moans coming from her sister's room. Intrigued, I decided to investigate and discovered her pleasuring herself with a massive dildo. The sight of her in lingerie, her curves accentuated by the tight clothing, was too much to resist. I couldn't help but watch as she thrust the toy into her beaver, her body writhing in pleasure. Her Latina heritage was evident in her fiery passion as she worked herself deeper. The sight of her juicy ass bouncing with each thrust was mesmerizing. I found myself hard at the sight, my own desires taking over. I stood there, a voyeur to her self-indulgence, my girlfriend's sister providing me with a show I wouldn't soon forget.