It was the weekend and Lisa was sitting in her bedroom after finishing work that day. She worked as an office assistant so was still in her work gear as she hadn't bothered to change. Sitting on her bed she wonder what her little sister was up to in her room. Over the last few weeks she had been dressing up in some pretty revealing clothing which was driving Lisa insane. She kept having these fantasies of tying her up to her bed naked and having her way with her. As she thought about her she slowly slid her hand into her panties and began to rub her pussy gently.