Family Ties/Tell her she should go mess around with her brother.
Bigstudlooking: Well considering everything. Maybe your brother being such a freak isn't such a bad thing. Maybe you could even have some fun with it.
Hottyheather: What do you mean?
Bigstudlooking: You go into his room and mess around a bit. I'll show you mine if you show me yours kind of thing. See where it goes.
Hottyheather: OMG I can do that with my brother. What if some one finds out?
Hottyheather: CAN'T
Bigstudlooking: Well I am sure you can't convince him to keep it to himself.
Hottyheather: I don't know if this I such a good idea, but I have to admit the idea of him openly looking at me is really turning me on.
Bigstudlooking: Come on babe, we both know if it bothered you, you would have already put a stop to his peeking. There is a part of you that secretly likes it. You know it! And from a guy's point of view if my sister made me that kind of offer, no way I'd turn it down or tell any one about it.
Hottyheather: God I am really wet, I can't believe I am actually considering doing this.
Bigstudlooking: Go baby, I'll be around when you get back and you can tell me how it goes.
You tell her that to solidify your identity as an outsider, even though you know full well that there won't be a next time if this works right. Heather will end up your secret lover and Bigstudlooking will die right here.
Abruptly, Heather signs out, and your heart skips a beat, knowing she is on her way. You scramble to shut your computer off and strip out of your boxers, wanting for Heather to walk into the room with your hard cock sticking straight up, ready for her. Quickly, you grab a Playboy to serve as an explanation of your raging boner for when she walks in. The door to Heather's room opens and you can hear her walking out in the hallway of the sleeping house. Your pulse quickens, and you count the seconds before she opens the door to your bedroom.
Eventually, you hear what you assume is Heather's bedroom door and your heart sinks, figuring that she has chickened out. You reach over to turn your computer back on and get up to check the darkened hallway. You slowly open the door, peek your head around the door frame, and are frozen in complete shock. The sound you heard was not made by Heather's door re-opening but by Heather opening the door to Timmy's room. With your brain in near-seizure, you watch as she quietly slips into the bedroom down the hall from you, hearing a light click, a clear indication that she just locked your little brother's door behind her.
How the fuck did this happen! Everything was working perfectly! Fuck! Damn it, you stupid slut.., you were supposed to be coming to my room, not Timmy's! What the fuck! you scream out in your mind, trying to focus on what to do next.
You could expose her and what she's doing in there to everyone in the house. There is a skeleton key to every door in the house, hidden in the vase in the hallway upstairs.
On the other hand, you do have a camera planted in Timmy's room, due to it being one of your mother's favorite places to masturbate. You could always see if it's working and find out just what's going on in there.