Incest Seduction/Beg mommy for another orgasm
She's right. You don't need to be scared. You just need another orgasm. Mommy knows best. She always does. Even when you want her to be wrong so much she always seems to prove herself right.
"P-please... Please mommy..." you whimper as daddy straightens your left leg. "Please do it... Please make me c-cum again... Please, mommy, please... I w-want to feel good... M-make meee..."
"There, there, I know you do, sweetheart." Mommy dips a knuckle inside you, mostly teasing you. "Just be patient. I'll keep rubbing."
Your unsecured leg bobs around as mommy fingers you. Daddy stands to take care of that, first repositioning your bum to bring it right to the edge of the table again. Mommy asks Zack to go get the green bag from the bottom drawer of her dresser. His reluctant departure from the table affords your arms a short rest with no one pulling on them. You're almost sad. It's then you realize that being held down is much more exciting than being in control. The added thrill of the uncertainty, the helplessness, the fear, all of it gets your heart racing.
Daddy selfishly gropes your ass a little, pretending to move you more than he needs to, and almost spanks you, a light tap on your bum, before he stretches out your other leg. He slowly wrenches you open, guiding your joints to relax and shift as best they can. Your pelvis doesn't have muscles to open yourself this far and you groan with discomfort which encourages mom to rub you faster. But your legs are no longer yours. They just happen to be attached to you as they part and welcome the world to feast upon your easily assailable sex, spread open as wide as you can be.
Despite all the tugging, Daddy doesn't get your legs all the way down to the table. They hover above it slightly, your hips pushing back against daddy's tightening. He probably could force them flat if he really tried. You bet you're flexible enough with how into yoga you've gotten. He's probably just being nice to you. But this is more than far enough, the extended stretch in your crotch felt immediately, your vulva splitting a little all by itself. Mom stops touching you just for a moment as she walks around daddy, crouched on the floor still strapping you to the table leg, so she can get right in front of your now fully accessible pussy once again.
Mommy steps up and sinks two fingers into your messy hole. A high pitched whine escapes you as you feel the inside of your pussy stretch and clench from the quick insertion, a sensation you didn't know you had missed so soon. Mommy places two fingertips from her other hand above the first, squarely on your clit, and quickly rubs up and down in a straight little line against your excited little nib.
You're a pathetic mess. You're already so close. Your jaw drops open with your heavy breaths, one of your eyes twitching and fluttering closed as daddy adds the final tugs to lock your legs fully open. He stands, looking quite satisfied, before running his manly palm over your skin, across your calf, all the way up your inner thigh, as he slides in close to mommy. He then pats his hand on your flat belly with a strong confidence.
"That ought to hold her."
"Good work daddy," coos your mother.
The two of them kiss briefly, then share another, and then lock lips again. Watching your parents start to make out while touching you - daddy's hand on you, mommy fingering you - is too much for your fragile state. You squeak, holding your breath, then let out a moan as your legs shake against their new bindings. You try (feebly) to keep your arms above your head while shuddering with pleasure, even though Zack isn't holding you. You want to be their good girl so bad.
Your parents' eyes turn to you as you shudder. "Did you cum already sweetie?" asks mom.
"Ju-j-just a l-l-li-little wuh... unn..."
"Mmm, you are purring right now," replies mom, still strumming your clit and drawing out one of your weaker orgasms. "Just set it next to the table baby, thank you."
Rolling your head to the side you spot Zack beside you. He places the large bag on the floor and stares at you for a long moment, drinking in the sight of his naked, twitching, splayed open little sister, before obediently taking his seat again at the end of the table. But your eyes were drawn to the front of your brother's grey sweatpants, a pole pushing away from his crotch with a very obvious dark spot at the tip of his raised tent. The spot is wet, the tip soaking through his sweats. Knowing your brother is so horny that he's leaking makes you moan again under mom's twiddling tutelage.
Once your limbs have stopped fidgeting, mom grabs the bag that Zack delivered. Out comes something long and clear, a rounded ball on the top with several more comprising its length with a flared flat base on the bottom. Mommy doesn't even give you a moment to rest before she forces the tip between your labia and pushes in with even pressure, causing you to cry out with shock.
"Always go with glass, girls," advises mom. "Nothing else like it."
The bulbous rod in mommy's hand splits you open in an unforgiving kind of way. Even Daddy wasn't as hard as glass, although he was definitely bigger. You must be very tight though because even though this dildo of mommy's is clearly smaller, you still feel a delicious stretch when it pushes into you. The difference is that, while daddy's dick can flex and maneuver its way into you, your pussy has to get out of the way of this glass obelisk that does not relent as it dives inside you.
It feels insane. Not only does it press so hard against your insides, especially when you squeeze against it, the multiple balls are able to stretch your lips over and over as it plunges into you. Your entrance contracts behind the round head that first enters you, then gets stretched again by the ball below that one, again and again all the way to the end. It's like the feeling when daddy's broad head first enters you and you close yourself around the back of his glans, but 5 times in a row. If you're being honest it kinda hurts with how fast mommy is pushing it, but you like it all the same, not that you'd have a choice if you didn't.
You can hardly process any of this when mom first forces this crazy thing in you all the way up to its base. The stacked orbs are a lot to handle, and you buck and shake when mommy rips it back out, and you continue to do so when she jams it into you a few more times. Zack is quick to tighten his grip, yanking on your silky binding almost as a warning to keep still. Bracing against mommy, you yank back, wanting your brother to pull you harder.
"It can take some getting used to," notes mom, quickly ripping it all the way out of you, making you shout again as your punished slit rapidly closes over the void left behind. She's doing this on purpose, being so rough with you. Or she's forgotten how supple and sensitive her own pussy was when she was still a girl.
"Mm-huh," you nod with gasp, your breaths having quickened.
"But Dawn, you were right. Look how messy she is!"
Mom holds up the glass dildo for everyone to see. White creamy streaks coat its surface, each of the balls dragging as much as it could out of you when it retreated, with much of the extracted wetness settling into the crooks between each orb. Fluids from your brother, father, and sister are all mixed together along the length of glass that mommy just pulled from you.
"What a state. Open your mouth."
As mommy leans forward you hesitantly drop your jaw. She guides the first ball past your lips and onto your tongue, and then the second. For a moment you worry she may try to shove this unwieldy thing down your throat as well, but she stops at that second ball, holding it in place. She doesn't order anything of you, but you close your lips around it anyway. It seemed expected. Then you suck, drawing the cum and spit off of the rounded glass with your tongue while some runny cum on the third ball pools on your upper lip. She gives you but a moment with it, then takes it away, just enough time to leave the taste of most of your family's mixed shame lingering in your mouth for you to become more familiar with.
"Y'know, this can be pretty good too."
Mom reinserts the dildo into your slit, but only halfway. Then she shakes it gently, moving it side to side and back and forth, one of the balls grinding against your g-spot. It is in fact very good when used like this, and you are moaning like a slut again after only a few seconds.
"But you know," continues mom contemplatively, "I also saw the way your eyes lit up when Dawn poked at your backdoor. These toys can be very versatile."
She pulls the dildo out once more and quickly returns it, but this time presses the head against your asshole. Your eyes sure do 'light up', opening wide as your anus puckers and squeezes against the hard intruder. But with your asshole well slickened from the trickle of juices that have escaped your pussy, and the glass lubricated much the same, it doesn't take a lot of force for mom to jab the first ball past your sphincter, making you gasp. Of course the next one follows, chased by a groan, and then the next and the next. The bulbous glass rod gets buried in you in a brand new way, filling and plugging your pert asshole. You've never had anything in your ass before, not really, not like this. The new stretch and fullness you feel after your dirtiest hole is violated makes your spine tingle, skin crawl, and pussy clench.
"You just hold that right there, honey-bug."
It sure isn't going anywhere, and neither are you. You simply nod as you squeeze your bum.
Mom takes a seat at daddy's spot, much like Dawn before her, and leans in close. Two fingers push inside your pussy, which feels even tighter with a rod in your ass, and mommy wastes no time taking care of you as she promised. She explores your g-spot and twitches her fingers against it maddeningly. At the same time she presses her other hand down on your pelvis, increasing the pressure. Then her thumb pulls taut the thin hood at the top of your slit to fully expose your trembling clit to her tongue. She has you thrashing in moments. For a married woman, mom is inexplicably good at eating pussy.
"I'mcummingI'mcumming!!" you shout behind clenched teeth, all of a minute later. You squeeze the diamond shaft in your ass and rotate your hips the little that you can, desperate to dodge mommy's twitching fingers once you climax, to find some reprieve. But mommy doesn't stop; she switches gears.
The fingers in your pussy straighten out and start plunging in and out of your hole. The wedding ring on mommy's finger taps against the edge of the glass base sticking from your ass as she hurriedly smushes her knuckles against you. Her thumb pulls harder on your delicate protective folds as her tongue flicks even faster across your clit.
Mommy's resilience is intense, the stimulation overwhelming. You try helplessly to close your thighs and fight hopelessly against the straps holding your ankles impossibly far apart, unable to bend even your knees as the rest of your body spasms with pleasure. Your brother also fights you, pulling you back twice as hard every time you yank against your wrist binding. Merely responding to your flailing, your brother stretches and lengthens your already slim form like a kind of medieval torture. But your clit is what is on the rack, your sensitive nub nibbled unceasingly by mom as it stiffens and shudders and aches and wanes.
After pushing you for so long, mommy surrounds your clit with her lips and sucks on your tiny tip, trying to draw it into her mouth. The pressure and suction throws you off of a hidden edge you didn't know you were near.
"I'M... CUMMING... AHHGAIN!! AAAAHHHUUGHHHNNnnn..."
You scream until you're out of breath, all your muscles contracting, your nipples tightening, and your pussy leaking more of your wetness. Mommy moans, her lips vibrating around your clit. Her fingers sound like they are squishing into jello, your quivering twat a dripping mess.
"Oh my gawd," comments Dawn from behind her phone. "Eighth graders are such lightweights."
Eventually, when your mom relents, you're left sweaty and exhausted, struggling to catch your breath. Mommy sucks her fingers clean and steps away as little aftershocks hit you, your body tensing up all on its own every few seconds. Mommy thanks daddy for helping and they both start talking to Zack, leaving you to moan and twitch with relief.
A moment later there's some prodding between your legs and you weakly lift your head from the table to spy Dawn snooping around. She's stood over you with her phone surreptitiously pointed down at her fingers as they pull your bald outer lips aside, spreading and pushing inside you quite clinically. Here's Dr Dawn again, quietly commentating as she inspects you, but with commentary unbefitting a doctor. Something about "thirsty slut still wants it" and "tight little playground pussy".