Incest is best

With a louder grunt than usual he released his hot seed into her ass. The feeling quite amazing, his cock pumping in and out of a tight ass, his own juices sliding out and around his balls. He felt himself continue to spurt out, Janie letting out one last muffled moan, just as their bedroom door opened.
They both froze.

With every muscle in their entire bodies tensed, they suddenly both collapsed into a heap on the floor when they saw their little terrier dog, Jake push open the door with his nose.

That was too close Ben thought.
He quickly gathered the sheets off the floor and amended the room to how it should be, before giving his little sister a tender kiss on her lips to say goodnight.
He slept soundly with Jake at the end of his bed, waking up the next morning with his usual boner.

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Going downstairs, mum and dad are reading the weekend papers, Janie watching the cartoons. I grab my usual mug of tea and bowl of cereal and sit down next to Janie to watch re-runs of Mutant-X. Yet again the Professor is hatching a plan to bail out one of his pupils at the academy. Sometimes I wonder how he has the patience...but then my mind is jerked back to reality as my sister touches my knee.
"Janie," he grabbed her hand "you can't do that. Not infront of ANYONE!" He said through gritted teeth.
She looked at him with her huge, unquestioning eyes and stared straight ahead at the t.v.
He felt bad.

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Later that day

Mum and dad had gone out to the cinema, leaving me to babysit. I put up the usual complaints about not being able to go out myself, so they give me some money to order pizza.
Janie and I sat down on the couch to watch another film but we couldn't keep ourselves from touching each other. I opened the zipper to my jeans (which to my advantage were quite baggy) and placed her hand inside. I felt the coolness of her skin touch my dick and that's all that it needed to spring to life. She leaned in close, eager to see it change from its limp state to its erect hardness. I quickly got out of my jeans, after making sure noone could see in from outside. The smile on my little sister's face making my heart melt. Those lips...

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With mummy and daddy going out, I knew my Ben would be looking after me, so I deliberately put on some of my nicest clothes. I don't think he noticed though. He ordered pizza for us, but not long after we'd done, he looked over at me. Oh...his smile is so warm I just want to be near him all the time. I longed for him to touch me how he did last night. It wasn't long after I had thought this that he opened his zipper and put my hand inside. He wasn't wearing anything underneath and I immediately felt his soft but wiry hairs, then his soft, smooth skin. It seemed to move in my hand and I wondered how it went from so small to so big that I leaned in closer.
Without anything said he took his jeans off, his dick still limp he pulled in my head towards it. I knew what he wanted so I opened my little mouth. It was so much easier to suck when it was like this, nicer too. He told me to keep moving it around, sucking on it like an ice pop, so I did just that. He moaned, his dick getting larger, I could feel it growing in my mouth. I soon found it difficult to have it all in my mouth and had to just suck the top two or three inches.
He gently held my head still and removed himself. His cock projecting out from his body by itself. It was then that he leaned forward and kissed me for the first time on my lips.

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Man I just had to get her lips around my cock. So red, full and her mouth so warm and wet. Mmmmm, she was good already but still needed some direction on how to give a blow job. She picked it up quickly, she was gonna grow up to be a real cock-craving whore. But right now she was my innocent little sister, nothing and noone getting between us.
I could feel my sacs tighten, her mouth getting too small to hold all of me. I still needed to teach her the art of deep-throating. I smiled to myself as I stopped her, taking my cock out her mouth (which was very hard for me to do). I saw her eyes, still unquestioning, and did the only thing that I felt I should do. I kissed her. I let my tongue gently part her lips, opening her mouth and exploring her warm cave. Her small tongue, dancing about wondering what to do.
There was a silence when I stopped for air. Her tiny hand nervously grasping my knee.
"Ben?" her voice was shaking.
"Yeah sweetie?"
"Can we do what we did last night again?"
My heart started beating so fast...my mind couldn't think fast enough.
OK.
Parents gone, house to self. Look at watch, right, we have at least two hours before they get back. They were having dinner too. I looked back at Janie and hugged her tightly.
"I'd love that, let's go to our room."

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They raced each other up the stairs, laughing as Ben pulled on Janie's ankle at almost the top step, sending her screaming with nervous energy into the room and dived on her bed. Ben pounced on top of her and they lay there giggling, until Janie reached out and held Ben's cock.
Laying in almost darkness, only the light from downstairs reflecting into their room, Ben turned onto his back urging Janie to rub him.
She gently stroked up and down his cock, just how he had shown her. Circling the head with a tiny finger, her soft skin floating over his own velvety head. His dick twitching again, she lowered her head over it, her tongue sliding around his helmet, her mouth being filled with an ever more familiar feeling. She wondered just how much she could get in her little mouth and went deeper than she had before.
Ben opened his eyes and watched with amusement and admiration at his little sister trying to deep-throat him without him ever mentioning it.
She's a natural alright
She got down almost 4 inches before his ever growing cock reached the back of her mouth and she gagged.
She started to apologise before he stopped her with another kiss. This one more urgent, this one more needy. He sucked her tongue into his mouth, her moans muffled with his own, her hands trying to grab every part of him at once.
He laid her on her back, her small breasts not even wobbling. Laying on top, his cock now very much hard, pressed against her stomach. He reached down with one hand, smiling again as he remembered she was hairless, her smooth skin only making him harder still. He gently circled her novice clit with his finger, feeling her shuddering beneath him. His other hand massaging what breast there was, his thumb caressing her very tender nipples.
She could feel his warm breath on her neck, she remembered this same sensation from last night and remembered that she had liked being gagged.
"Please gag me again Ben...I want you to fuck me without having to hold in my cries."
He stopped momentarily, she was more grown up than he thought.
This time he had more time to think, remembering his 'British Made' bandana. He'd always liked the British Bulldog on the front, and that's the part he shoved in her mouth has he quite roughly tied it around her head. He could see her smiling beneath his gag and without asking she turned around and wiggled her cute ass in the air. He didn't need any more encouragement. He came up behind her gently stroking her fleshy globes, a finger delicately tracing over her wet folds. The feeling still so new and exciting to Janie, she begged him to do more by leaning back into his hand. He got the hint and inserted a finger, her muffled moans making his cock throb. He began to stroke himself whilst inserting yet another finger into her tiny wet cunt, stroking up and down in time with his fingers moving in and out of her tiny pussy. He grabbed onto the base of his cock, directing it to her opening, her juices beginning to flow over his fingers.
He couldn't wait any longer and thrust into his little sister, the gag doing its job as she let out a scream into it. He leaned forward, holding her tiny breasts in his hands, his cock going in deeper as he thrust himself further in. Janie moaned even more, the feeling of his cock so intense to her, the feeling of his warm flesh inside of her. Her chest becoming flushed with colour as his hips pressed against her ass.
She wasn't sure what it was but she wanted more, it was as if his cock didn't fill her enough.
After minutes of thrusting, panting and moaning he withdrew with Janie turning to look at him with a questioning look. He smiled and came around infront of her, his cock turning almost purple and absolutely covered in her wet juices. He untied her gag and pressed his cock head against her red lips, she looked into his eyes as she opened her little mouth as wide as she could, licking off her own juices as she took him in deeper than she ever had before.
"When you feel it's too much, swallow a little, you'll be able to take more of me in, take a deep breath before you do it though."
And with that he pressed his hips further in, almost immdiately sliding right in, her lips touching the base of his cock. Janie felt very proud, she knew this would make her brother happy.
As he began to pump himself in and out, Janie's cunt began to drip and with one hand propping her up whilst she knelt, her other hand reached down to touch herself, the way that Ben had touched her.
My God, I wish I could be both places at once Ben thought.
With that thought in his mind, he released his seed into her mouth, ejaculating down her throat making her choke a bit. He carried on with little spurts, each one going either in Janie's small mouth or on her face. She loved it when he did that, the feeling of its warmth quickly going cold.
Just when Ben laid back, panting and going over what they just did in his mind, Janie shocked him.
"My turn!" She said as she licked off most of his cum.