(This was originally filmed as a custom video, and is the third part of a series) You and your sister have been enjoying your 'movie nights' for a while now, with your sister affectionately referring to them as the 'wanking club'. Tonight it's her turn to pick the video to be watched, and she excitedly settles in and gets comfy on the sofa next to you. She tells you that since you showed her that step-siblings video a while ago, she's gone on a bit of a rabbit hole of taboo videos, and the one she's selected tonight is a taboo brother sister scene. As you watch it together it's clear that your sister has become more and more comfortable with this situation over the weeks you've spent masturbating together, as by now she strips off with no sense of shyness, and chats to you about her own masturbation habits, as well as quizzing you on yours. She narrates the story to you, telling you what it is she likes so much about these taboo kind of videos, and occasionally drops in a searching question, seeming to probe whether you would like it if the two you were to do some of the actions in the video together... At one point she shows off her ass to you, explaining that sometimes she likes to masturbate like this so she can fantasise about being fucked from behind, and teasing you about how it would look if your mother were to walk in on this sight! She insists that you hold off your orgasm until the very end of the video, so that the two of you can cum together. Your sister cums hard, watching closely as you shoot your load, then she happily informs you that it's your turn to pick the video next week, and suggests you stick with the taboo theme! TAGS: british, english, redhead, ginger, tattoos, tattooed, posh accent, dirty talk, natural, build up, relaxed, dual masturbation, duel masturbation, dildo, vibrator, siblings, wincest, roleplay