I met Mandy at a college party, and we hit it off right away. She invited me to hang out with her friends the next day, and I eagerly accepted. Little did I know, one of her friends was her hot younger sister, Sara. As we were all chilling by the pool, things took a naughty turn. Mandy dared Sara to skinny-dip, and before I knew it, we were all naked and laughing. The warm sun on our skin and the cool water between our legs sent shivers down my spine. Sara's mischievous grin told me she was up for some outdoor fun. As we frolicked in the water, our playful splashing turned into something more sensual. Friends sister porn had never been so exhilarating. And I couldn't wait to see where this adventure would take us next.