Family Ties/Ask her if she has ever thought about doing a family member.
You decide to push the point, wondering if she has already thought about messing around with you, and wanting to plant the seed of curiosity in her if it hasn't already crossed her mind.
Bigstudlooking: So can I ask you something?
Hottyheather: Sure, you can ask me anything you want.
Bigstudlooking: I know both of your brothers are constently peaking on you, have you ever thought about, you know, screwing around with him?
Hottyheather: OMG He's my brother!!
Bigstudlooking: I know that, but hell I got an older sister I would nail in a heartbeat if I knew she would let me.
Hottyheather: Well I have seen his cock, not completely hard, but it's a really good size. I guess I have wondered what it would be like to touch it, have it in my pussy. Would you like to fuck your sister?
Bigstudlooking: Hell yes! I give my left nut to bang the hell out of her.
Hottyheather: Well the only one I have ever screwed around with in my sister Jessie.
You nearly spit out the pop you were sipping when that line comes across the screen. You had no idea that your sisters had messed around with each other. You have to push your face into a pillow not to cough so loud that Heather hears you. After recovering, you start to type your response.
Bigstudlooking: What have you and your sister done?
Hottyheather: It's no big deal. We have made out a bit and felt each other up some. Last week I gave her the first orgasm she ever had.
Bigstudlooking: How did you do that?
Hottyheather: I licked her cunny till she creamed. She tasted so sweet.
Bigstudlooking: Are you wet baby?
Hottyheather: Little bit.
You can hardly believe what has transpired, you may actually be able to get her to mess around with you if you play your cards right, or at the very least, get to see one hell of a show.