Incest is best

"Did my baby cum?" Ben whispered softly into Janie's bright red ear.
"YES! Oh, Ben," she lifted her head off the bed "please let's do this again?"
"You certainly have no worries there sister, I'll always be here for you. Right now though, we need a shower before mum and dad get back."

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I watched as she left in the direction of the bathroom, her cute little ass wiggling as her feet padded across the floor.
I started to rub myself again as I heard her turn on the water, imagining her skin being covered in soapy bubbles. I started to rub a little faster, juices still on my cock making it easy to fist.
Mmm, yeah.
I looked across at the clock, still half an hour or so before parents were due home. I looked down at my semi erect dick, giving my balls a gentle squeeze as I tried to make up my mind.
Then Janie started singing, her small voice being echoed throughout the tiled bathroom. My cock sprang up hard again, and that decided it for me.

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I knew Ben wanted me all cleaned up for mummy and daddy cominme, me, so I left quickly, not bothering to cover myself and turned on the water. As the room started to fill with steam, I looked at myself in the mirror, seeing my cheeks flushed with red. I thought I looked like a living doll.
I laugh to myself as I turn side on, wishing my tits would grow. My best friend Alice has them, all the boys like her because of that. They don't even notice me. The mirror steams over so I get in the shower and start soaping myself, feeling the stickiness between my thighs disappear. My feeling of self satisfaction started me singing a song without even realising, and that's when I saw someone standing outside the glass shower door.

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"AAAaaaa! BEN! Don't scare me like that!"
"Hey hey! Sorry, didn't mean to." Ben holds his hands up to show his surrender.
Janie grins and opens the door.
"What are you...," she sees his erection "oh...you sure? Aren't they getting back soon?" Her young brow furrows.
Ben says nothing and steps in, the water immediately bouncing off his chest. He lowers his head to kiss her wet lips, tasting both herself and him on her breath still.
Janie feels his erection poking at her stomach in this confined space. She steps back and leans again the wall section, propping her leg up on the side. Ben takes the weight of her leg with his hand and moves in closer still, taking up her invitation with a double urgency. He doesn't even wait for Janie to OK him when he starts to impale her with his manhood. The tip of his cock quickly stretching her tight pussy, he covers her mouth to stifle her outbursts with his.
His tongue delving deep into her mouth, his cock thrusting into her already wet hole, it doesn't take long for him to reach orgasm point. He looks at her, seeing in her eyes that she's not enjoying it as much and holds back. He reaches down with his hand, caressing her stomach, stroking her thigh with his cock still firmly deep inside her. He stops kissing her and looks into her face, again flushing bright red, from either his affections or the shower, he can't be sure. He grabs a hold of her, lifting her right up so he gets to fuck her the way he wants. Letting her fall back down onto his throbbing erection, her tight walls contract against him, making him groan with pleasure. Janie lets out a little squeal as she begins to reach orgasm. With a few more deep thrusts he hears her whimpering, her pitch getting higher and higher, sounding every bit like a porn star. Her walls clamp around him and he holds her still, feeling her juices release around him once more. Only when they run down and tickle his balls, with the water still running hot around them, does he release into her. Janie feeling the warmth both inside and out.
They both quickly finish washing, not forgetting to clean their teeth before grabbing fresh fluffy towels to dry themselves and each other. Ben standing behind her to dry her hair, she reaches around feeling his now flaccid cock, loving the feeling of its soft skin in her hand.
"Hey, not now sweetie, we gotta get to bed. It's late."
Ben resists the idea of giving his sister yet another quick fuck, the fear of getting caught this time geting the better of him.
They both go the their room and Janie brushes her hair before laying her head down on the pillow. Naked as it's another hot night, quickly falling asleep.
Ben finishes off drying his own hair, looking at his sister's chest rise and fall in its steady rhythm. He lays down naked on top of the bed, wanting to feel her skin next to his one last time before getting into his own bed.
He doesn't realise as he's stroking his sister's smooth back, that he's actually dreaming it. He has already fallen asleep.

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The door unlocks, two half drunk adults walk into the hallway.
"Oh hey, John. They must be asleep already...so let's,"

BANG!

"be...quiet. Well done done John, way to go." Her sarcastic tones unmistakable.
"Not my fault Janie left her skates down here! I could've broken my neck! I should go have a word with her about that." His face turning a pale shade of red as his anger builds.
"Oh for God's sake John, leave it. She's 12! What do you expect?"
"Well, for one thing Susan, I expect her to clean up after herself!"
"Oh shut up and go to bed."
John huffs as they both go upstairs, passing the closed door to the kids' room. Susan stops outside, her hand reaches up to the handle, ready to go in and check on them.