GF, with a mischievous glint in her eye, decides to introduce you to a new game. She lines up several of your friends, each with a raging hard-on, and takes her place at the front. She starts with a slow, teasing stroke, her hand sliding effortlessly up and down your shaft. The sight of her hand working your cock, combined with the knowledge that she's doing the same to your friends, pushes you closer to the edge. She senses this and quickens her pace, her hand a blur as she works you towards your climax. You feel the first wave of your release, and as you look down, you see your GF's hand covered in your cum, a satisfied smile on her face.