You randomly get a Skype call from your sister, at first you don't answer but you end up picking up. It starts off normal enough, but quickly she starts talking about how horny she is and it dawns on you that she thinks she called her husband who is traveling for work. You consider hanging up or at least telling her that she called the wrong person, but everything happens so fast and if you're being honest you're kind of turned on by the whole thing so you just let it play out. A couple minutes into her touching herself and dirty talking to you... and admitedly you jerking off to her... she realizes that she called the wrong person! She immediately stops and covers herself up, calling you a perv for not telling her that you were the one on the other line when she clearly meant to call her husband. But it doesn't take long for her to admit that she's way too horny to even care. She even goes so far as to tell you to turn your camera on so she can watch you jerk off to her. Talk about a turn of events! She finishes herself off while instructing you to do the same, but as soon as she's finished reality sets in and she can't get off the call fast enough! You better not tell anyone!