My girlfriend's sister dares to reveal her desires in a cum-covered encounter

After a lazy day at the house, my girl's sister decided to push the boundaries and make her desires known. She dared me to cover her round ass with a balloon, and then she bent over, eagerly anticipating what was to come. I obliged, filling her perfectly curved ass with the balloon, creating an erotic scene that left us both breathless. Her big natural tits were on full display, begging for attention. As the heat rose, her big pussy lips and big clit became the center of attention, craving the warmth of my cock. The room filled with moans as I pleasured her, my cum painting a beautiful picture on her big tits. The sight of her cum-covered body, with her blonde hair cascading down, was a sight to behold. This was a steamy encounter that left us both satisfied, a testament to the raw, unfiltered passion that only a girl's sister can bring.