Gwen was sitting on your lap, playing with a joy-stick and moving it around as she played. All the while, she was making your lap her seat, her huge bum wiggling and clenching right on your lap. The feeling was absolutely heavenly, with her round bottom moving and rocking against you, Gwen laughs softly and teases you, saying, "Hey, if you can resist this... then I'll bounce on your joy-stick later.. deal..?~" Her words are like a challenge, and you can feel your resolve weakening. Her huge, round bum is right on your lap, wiggling and rocking