Let's start her with the basics - the hand-job

“John will you teach me how to please a guy?” she says shyly.

“Of course” You reply seriously “But Jessica you need to promise to do what I tell you… no matter how embarrassing or weird it may seem, okay? Sometimes I’ll make you do things and feel things that may seem strange, so you have to trust me and promise to obey.”

Your little sister stares at your serious face then nods thoughtfully.

“I promise” She says sincerely “I’ll do anything you tell me to bro.”

You can see that she is being honest and know that now you’ll have control over your sister without having to altering her decisions or desires. The only thing left to decide is what to teach her first. ‘I better start with the basics’ you think to yourself.

“Jessica, we are going to start with a hand-job,” you tell her “Have you ever heard of one of those before today?” She nods eagerly.

“The girls at school talk about them sometimes, but I’ve never seen one until Britney did it to you”

“Well, Britney did a good job” you tell her “but I’m going to teach you to give fantastic hand-jobs” And with that you beckon her over to kneel between your spread legs, in front of your long softened cock.

Jessica kneels in front of you without hesitation and takes advantage of the position to have a closer look at your dick.

“Wow” She says “Do all guys have penises this big?”

“No, I’m especially large” you say “almost no one else has a dick this big. And you aren’t to call it a penis again, this isn’t a biology class. From now on you can call it a dick, a cock or my shaft, just not penis. The same thing goes for your pussy, I don’t want to hear you calling it a ‘vagina’, you can call it your cunt, pussy or anything like that.”

Jessica nods thoughtfully at your words; you can tell that despite her age – she is still quite naive in the world of sex. You take her hands and gently rest them on your dick. She looks up surprised then giggles a little. You smile at her innocence then show her how to stroke it up and down and how to cup your balls gently. She quickly begins to get an idea how it goes and your dick begins to harden again.

“Good Jessica” You say watching her look of concentration “That’s how you get the guys cock hard so you can begin, just remember to be gentle at this point. It’s a delicate part of a guy’s body and he doesn’t want it to be hurt. Now let me show you where it’s most sensitive…”

You show her where to focus her hand movements and how to stimulate the different parts of your shaft, telling her what feels good and what doesn’t. The focused look of determination on her face is making your quite horney and as she gets the hang of it, her small hands on your cock start making your feel very heated.

“Oh that’s it Jess,” You tell her as your breathing quickens “Now give the head a big broad lick like a ice-cream cone”

She looks a bit dubious for a second but obeys your command, her soft warm tongue licks over the head of your dick sending a bolt up your spine and causing your pelvis to twitch forward. She sees this and giggles, then licks it again running her tongue over and around the head then teasing the hole with the tip of her tongue.

“Whoa Sis!” You gasp hurriedly as your dick jolts in pleasure “That’s not a good thing to do just yet! You don’t want to finish the guy too soon, and that’s what doing that to him will do!”

“But it’s funny” She says laughing softly and you smile down at her.

“Maybe but using that much mouth will come later, I want you to use more of your hands right now.”

She understands and goes back to playing with your pole. She quickly realizes that her saliva on your dick means she can grip it firmly and really start jacking you off. And that is what she does. You sit back and watch as your youngest sister begins pumping your monster cock firmly in both hands and moan softly at the stream of pleasurable surges you can feel it sending through you.

You stare at her firm large tits bouncing in time with her pumping and her soft hair bouncing around her young pretty face and neck, then gasp again. Without prompting she has moved one of her hands onto the head of your dick and has begun rubbing it franticly while her other hand continues pumping the shaft. You feel an unexpected surge run up through your cock, and before you can stop it you cum hard all over Jessica.

She squeals in surprise as you cum over her chin and breasts, she claps her hand over the head of the penis and manages to catch the last of it before you make a mess on the dining room floor. Very considerate of her you think as you stare at her cum soaked breasts for a second time today.

“Well” You say with a bit of astonishment in your voice “Where did you learn THAT last bit?”

“I kinda guessed it would make you feel good from what you were telling me earlier” She says examining the cum on her hands then looking up at you brightly “Did it work?”

“Jess, that was great – you’re a very bright girl sometimes. It felt very good that’s why I came pretty hard, and that’s what that is in your hands. Call it cum or jism but not semen or sperm, okay?”

Jessica tastes the cum on her hands and looks pleased. She glances down at the mess dripping down the rest of her body, then back at you.
“Don’t worry about cleaning that up” You tell her “You might get messier yet, you can rub it in if you like…”

She does just that, rubbing your cum all over her firm lush young mounds making them glisten and jiggle. She looks up at you as she does and asks;

“What now…?”