Sexy Fun Times/Wank/Hang/Shower/Leading/Swallow/Toys

She follows you into the bedroom and stops at the door looking around. Your bed is an unmade heap of rumpled sheets and covers and there's a pair of dirty underpants on the floor, and even you're embarrassed about it. "Sorry about the mess," you mutter and start tidying up. As you pull the covers off the bed and straighten the sheet, Katie wanders around poking her nose into drawers. "Try that one," you say, pointing to the cabinet beside the bed.

She opens the drawer and starts taking things out: the first item is a big vibrator shaped and curved realistically like a penis, ten inches long and as thick as her wrist; she looks at it and then at you before she puts it on the bed. She finds two or three other smaller vibrators, some love eggs, and a couple of butt plugs and lays them on the bed as well. Her towel is only wrapped around her waist, and as you watch her handle the toys, you can't help looking at her small tits and you feel your cock begin to swell again.

"What's this for," she asks, holding up the larger of the two butt plugs.

"You put them in your bum," you say; "the wide bit at the bottom is there to stop it getting sucked right in." She grimaces, puts it back down and picks up the smallest vibrator; it's a cheap, simple one; just a plastic tube, about six inches long and maybe half-an-inch across, with a rounded end and a twist switch at the other. She twists the switch and drops it as it begins to vibrate in her hand. "I bet you can guess where that one goes," you say; "it looks about the right size for you."

She picks it up again, switches it off and stands, holding it and looking at you. "Why don't you get up on the bed and give it a try," you say. She climbs up on the bed and sits up with the vibe in her hand, frowning at it. "Do you want me to give you a hand," you ask. She nods, suddenly shy, and hands it over to you as you climb up on the bed and sit facing her. You reach out and untuck her towel to reveal her slim brown legs and her smooth pussy-mound.

"Put it between your legs; don't turn it on yet, just feel what it's like pressed against your pussy." She reaches down and presses the vibe between her thighs and looks up at you. "What do you think," you ask. She just shrugs and sits there. "You need to rub it up and down," you say.

She looks up and smiles at you. "You do it," she says, holding it out towards you.

You take it off her and catch hold of her ankles to spread her legs apart, making her fall over backwards and revealing one of the cutest preteen pussies you've ever seen. She starts laughing but stops when you turn the vibe on and press it against the cleft between her legs. You trail it up and down for a few moments, making sure that you press it against her clit, and you can tell from her reaction that you've hit the spot.

Her perfect little pussy has no hair, but there is a fine peach fuzz on her pubic mound. She isn't shy anymore and lays there with her legs apart as you admire her. "That's the sexiest sight I've seen for a long time," you say, making her giggle. What you really want to do is jump on top of her and ram your rampant cock into her virgin cunny; to rape her and fill her belly with your incestuous spunk; but instead, you switch the vibe on and start stroking it up and down her slit, making her shiver.

"I'm going to try putting it inside now," you say, sucking the vibrator to give it some lubrication. Her head is propped up with two pillows, so she can see what you're doing and as you move closer you see her biting her bottom lip. You use the tip to separate her pussy lips and then press it against the entrance to her vagina. The thought crosses your mind that she might still have a hymen. "Have you ever had anything in there before," you ask.

"Katie put her finger in," she says, her voice sounding funny. Relieved that there isn't going to be any blood, you push harder and the small vibrator slips easily into her cunny. You hold it there to allow her to get used to the feeling and then you feel her tense up and her hips buck as she hits an almost instant climax.

As you look at her, laying back on the bed, panting, with her legs spread apart and the vibrator still buzzing between her legs where she squeezed it out. Part of you wants to replace that toy with your stiff cock, while your conscience says "you can't; she's your sister and that's incest".

• Fuck it, you think, it's not me it will be somebody else
• You resist temptation