Your sister shows up ()

Suddenly, your thoughts were interrupted by the appearance of a girl. Instinctively, in the bottom of your mind, you know she is your sister, and that her name was Sarah. She has long blonde hair and perfect curves, and her gaze seems to be directed at your bulge. She is wearing a t-shirt and shorts. She seems to be 18 years old at best.

"Umm, hello?", you ask, uncertain about what will happen. Her gaze shifts to your face before she snaps herself out of it and responds.

"Oh, sorry, bro, I wanted to know if you wanted to watch TV with me", she explains, you wonder how this could lead to sex, but decide to accept.

"Yeah, sure", you reply, and follow her to the living room, sitting in the sofa as she turns the TV on. Sarah then sits next to you. While you watch the generic show, you notice she keeps staring at your bulge. However, she keeps snapping herself out of it and refocusing on the show. But she can't seem to keep her eyes off it.

"Interested?", you ask her in a sly voice, and she seems shocked that you noticed.

"Umm, well, it’s nothing, just that, some guys at school were bragging that had it very big and I wanted to see how yours was since I’ve never seen any..", she responded, flustered. Your smile grows. Seems Sarah is a little sexually inexperienced. You could very easily manipulate this situation.

"Well, would you like to see closer?", you ask as she eyes your bulge up again.