Your step-sister calls you into her room one evening to help her with her homework since your parents are out. She tries to explain what her assignment is, and remembers that she needs to look something up in her book. She gets on all fours and reaches over to pick up her book that is on the floor on the opposite side of her bed. She gives you a perfect view of her ass and you can’t help but notice that one of her pussy lips is sticking out of her shorts. She lies back down and opens up her book, but she starts subtly humping her pillow. You are now finding it very difficult to concentrate on what she’s saying. She finally admits that she didn’t invite you in here to help her with her schoolwork. She explains that she thinks it would be hot if you watched her masturbate. She says that she knows you think she’s attractive, and you could enjoy yourself as well. <br><br>She takes her hairbrush and drags the handle slowly down her body until she gets to her pussy. She starts to rub the handle against her cunt as she pulls her top down to reveal her breasts. She begins to tell you the story about the first times she masturbated. She explains that she would use her hair brush to fuck herself and she shows you how she would do it. Part way through her story she says she has an idea and leaves her room for a moment. She returns with a vibrator in her hand and explains that she likes to borrow it sometimes when mom is gone. She lies back on the bed and continues to masturbate and talk dirty to you. Now with the help of the vibrator, she soon has a leg-shaking orgasm