TVR/Andrew2/Bath/Bed

Still naked, you lay on top of the bed feeling guilty about what you just did and remembering what the Nurse said about not doing things the other person didn't like. The trouble is that when you think about what it felt like to push the head of your cock into Janet's throat, your cock begins to swell again and without even thinking about it you wrap your hand around the stiff shaft and start stroking it.

You close your eyes and take it slowly. In your imagination, it's Janet's lips that are wrapped around your cock and not your own fingers. Every time you start to feel a climax building up, you stop and wait for it to subside before starting again.

It's not until the bed bounces and you're attacked by bony knees and elbows and then smothered with something over your face, that you realise that Janet's there. You can't breathe and try to push her off, but she isn't going to give in easily. You managed to lift her up a little and take a breath before she presses her pussy back down onto your mouth. "So how do you like it," she says, but her voice is muffled because her legs are pressed against your ears.

Eventually, she relents and sits back on your chest. You can see that there are still tears in her eyes and you start feeling guilty all over again. "I'm really really sorry," you start to say, but she cuts you off.

"Sorry doesn't really cut it. Didn't that nurse tell you some rule about not doing things other people don't like, like shoving your cock down their throats?"

"I know… I really am sorry and I promise never to do anything like that again." It did feel good though, maybe she'll let me try it again one day.

"I made you cum, so now you got to do the same for me," she says. You think she's going to slide forward again, but instead, she rolls off to the side and lays on her back. You sit up and look at her naked body, her almost flat chest just two tiny bumps topped with pink bee-sting nipples, the swell of her tummy and then the mound at the top of her pussy which you can't see because her legs are together. "Come on, what are you waiting for," she says.

You reach down and put one hand on her smooth pale thigh and just stroke it, enjoying the sensation of her skin against your hand. You lean across and kiss one of her nipples before opening your lips and sucking it into your mouth. It's soft at first, but you feel it getting hard as you suck and lick it.

You hear her make a little moaning noise and assume that you're doing the right thing, but when you try to pull her legs apart she resists, but only for a moment before she relaxes and allows you to pull one leg away from the other. You keep sucking her nipple as you explore her pussy with your fingers and she moves the other leg to allow you free access.

You lift your head up to look at her and she gives you an encouraging nod, so you get up on your knees and move across between her legs. When you catch hold of her knees, it takes hardly any effort to push them up and you lean forward to look closely at your kid sister's pussy.

"Hold on a minute," she says, and when you look up she's trying to give you a pillow. It takes you a moment to work out what she's got in mind and then you slip it underneath her bum to lift it up, giving you the perfect angle as you lean forward and kiss her pussy lips.

Her pussy doesn't really taste of very much at all, just a slightly tart sensation on your tongue and the faint smell of soap. You start licking and sucking, working on the bump of her clit and then you feel her hand on the back of your head, pushing you in harder. Her thighs are clamped against your ears and you slide your hands underneath the cheeks of her bum and try your hardest to push your tongue into her vagina.

You feel her climax building and keep working, licking and sucking and squeezing and even though you feel her thighs squeezing your ears and her hips begin to buck, you keep going and she keeps climaxing until she grabs a handful of your hair to pull you away. You sit back on your heels and smile at her. Her whole body is blushing red and judging by the smile on her face you've redeemed yourself. "Did I do good," you say.

"That's bad grammar. Did I do well, you should say." You both laugh and then she lifts her head up to look at your stiff cock. "You know what we both want to do now," she says.

• Fuck