My sister gazed up at me, some of my cum still on her lips. She was standing naked, except for her black panties covering up her delicious pussy. The front of her panties were completely soaked, and almost dripping onto the floor. I had felt what was underneath those knickers, and soon I felt my dick would. "Did you enjoy that, little bro?" my sister asked. I nodded, still breathing harder than I ever had. "Don't you thin...