Jerking it for the crazy stepsister

You are home with your girl, but she tells you that her girl is in the house, so you will have to wait to play with her till she comes back. A few minutes later, her twin girl comes into the room. You are very much in the mood to jerk off and you want to involve your girl's twin girl if you possibly can. You take out your dick and start to stroke it in the hopes that she might somehow join in on the fun. She does! Don't even think about touching her, but you can watch her take off her clothes for you. Her tits are so very small and her body is quite petite. Her nipples are erect as she directs you on how exactly to handle that dick of yours. Christie makes it clear once more that you cannot touch her. She turns to show you her small ass and you also see her pussy. You want nothing more than to have her touch you, and that (along with her tiny nude body) is more than enough to encourage you along. Christie tells you that she really wants to see you cum.