Lyra Starts to make plans to see if she can bring your Mother's in on the fun.

"Might want to slip these on, wouldn't want the parents getting suspicious seeing my cum dripping down your legs," Lyra whispers into the ear as the car finally comes to a stop at the campsite. "Plus gotta keep as many of my swimmers inside you as we can," She adds with a mischievous giggle, the words sending an illicit thrill throughout your body, while your mind is a little less receptive about what your Sister is teasing.

You take your panties and quickly lean forward to slide them over your shoes and slide them up your long legs until you reach a point where the only way to slide them further is to dismount from your Sister. It's a delicate operation since Lyra's cock is acting as a plug keeping all the cum that wasn't fortunate enough to make it into your womb will start leaking out. Waiting for your parents to get out of the car and with Lyra's assistance you finally hop off her cock while Lyra helps pull your panties up just as the first few globs of her thick pearlescent cum begin to appear between your lower lips before being sealed by the soft fabric.

With panties back in place you can get out of the car and start to help with the unloading of bags ready for the walk to the spot you'll be pitching the tents. With each step and movement, you can feel your Sister's cum leaking out and into the gusset of your panties and you begin to wonder just how long they'll hold before cum starts to drip through the sticky mess of your panties.

Thankfully your Mother leads on with Momma Genevieve taking the rear and you just in front, so you only have to worry about one pair of eyes on you just in case Lyra's thick potent gift starts to leak through the fabric of your panties. Although it turns out that it isn't where your Futa Momma's eyes might wander you should be worried about, but rather where your Mischeivious younger Sister's eyes were looking.

Lyra is currently riding an unbelievable rush of breeding you in the back seat, the thought of not only knocking her up her big Sister she adores but right under the nose of your parents driving her wild. Lyra's cock is already almost rock hard and raring to go round two at just the thought of her potent futa seed flowing deep inside your defenceless womb on the hunt to commit the ultimate taboo. You Sister imagines your body swelling up and growing with the taboo secret of your forbidden union, which means she's distracted enough to walk right into your Mother.

"Shit, sorry Mom," Lyra says with a nervous laugh as she backs away.

"Language, Sweetie," Your Mother replies with a smile, "But It's my fault for suddenly stopping to admire the scenery," She adds looking around where the trees start to thin and some picturesque clearings with a small babbling brook can be seen.

However, despite all mother nature has on offer with its blissfully serene displays that both inspire and frustrate creative and artistic people alike for all time, Lyra's focus is captivated by a much different display of the natural beauty of her Mother's ass. Perhaps it's the brief contact between Lyra's rock-hard cock and her Mother's sweet cushy tushy or somewhere her depraved mind would always wonder. Yet in this moment, Lyra finds herself both captivated and inspired by her Mother's rear and all the wonderfully naughty things she wishes to do with it.

Lyra's deliciously devious mind quickly working away, pondering whether her Mother might be young enough to feature in the Forbidden Fruits series, it definitely wouldn't be impossible and it definitely would be fun trying. It might be a lot of work to get your Mother to where you are in terms of accepting **** and all the delicious forbidden delights it brings with it, but it would be worth it. Glancing back down the group, Lyra spies her Futa Momma and smiles as she catches Genevieve stealing a few quick glances at you as you continue up the trail, a smile spreads across Lyra's face as her mind sees a possible starting point for her wicked plan.

For now, you're completely oblivious to your younger Sister's evolving ideas of having an incestuous harem with all the women closest to her, nor do you notice the hungry glances Momma Genevieve steals of your sweet youthful rear. Your focus is very much entirely on the army of futa sperm swimming deep inside your womb eagerly looking to grant you the gift of motherhood. Each step towards camp you take, you feel the overflow of your Sister's cum sloshing around inside your pussy, slowly leaking into your panties. Although your panties would still be messy, even if it weren't for your Sister's seed since the thought of getting pregnant by your Sister is making you incredibly horny despite the fear of the consequences.

By the time you reach the campsite and get all the camping equipment set up, it's getting a little late in the day thanks to a short delay getting yours and Lyra's tent set up, stopping to deal with a different kind of erection once your parents leave to make a second trip to the car for the last of the suppliers. The sun slowly sinks behind the big mountain stretching above the forest across the lake, the skies are a mixture of impressive oranges and pinks as you sit beside Lyra enjoying smores around the campfire.

"Reminds you of anything?" Lyra teases in a low tone as she wiggles her stick with a melting marshmallow on it.

"No need, all I can feel is you leaking out of me," You whisper back with a soft smile as Lyra lets out a hearty laugh.

"Plenty more where that came from," Lyra replies. "Going to spend this trip pumping so much cum in you, you'll be having twins at least," She adds in a low tone, causing you to **** on the cracker and marshmallow mix.

"You two doing ok?" Your mother asks with a nervous smile as she looks back at you both while washing up the last of the utensils.

"Oh I'm sure our girls are doing just fine," Momma Genevieve replies with a broad smile. "Damn, it feels good to be able to say that out loud," She adds, putting an arm around your Mother. Your mother nestles into the arm, resting her head on her futa lover's shoulder as she admires her daughters.

"Yeah, we're good," Lyra calls back with a giggle.

"Well just don't stay up too late, or you'll miss breakfast," Your Mother replies with a big smile.

"You're not joining us?" You reply finally free of the shock of what your Younger Sister said.

"Not tonight sweetie, we're going to get an early night," Your Mother replies looking up at Genevieve with a glint in her eye.

"We are?" Momma Genevieve replies before an elbow in her ribs helps her catch on. "Oh yeah, we're both really tired," She adds with a big grin on her face.

"Have fun you two," Lyra replies with a grin waving as your Mother and Momma start to make their way off towards where their tent is pitched.

"If you hear moans or screaming, I'm just blowing your Mother's back out," Momma Genevieve replies with a big booming laugh.

"Genie!!!" Your Mother complains, her pale features bright scarlet at this.

"Reckon we'll be that close when we're their age?" Lyra asks once your Mother and Momma disappear into the tent in the distance, the faint sound of a soft giggling can just be heard over the soft breeze in the nearby trees.

"I hope so," You reply with a soft smile. "Just hope they understand and accept us, if you make good on that promise," You add with a nervous smile.

"Oh they will," Lyra replies with a big smile. "I'll make sure of that," She adds with a confident grin, putting a reassuring arm around you.

"How?" You ask uncertainly.

"Oh I have a few ideas," Lyra replies with a grin as you both hear what sounds like a slap, shortly followed by a cry of surprise from your Mother.

"Sounds Like they're wasting no time," You comment with a nervous laugh.

"Yeah," Lyra replies with a laugh, "We might end up with a sibling to grow up alongside the twins," She adds in a teasing tone.

"You reckon?" You reply.

"It's possible," Lyra replies. "Moms definitely not too old to yet, and I can see why they didn't before because it might given away their secret before they were ready to tell us," Lyra ponders aloud. "Who knows maybe this holiday might be nostalgic enough to remind her of what it was like having us, so she looks and stops Momma from putting a condom on, her eyes telling Momma to fuck a baby into her like she did all those years ago," Lyra continue with a big smile on her face.

"Pretty detailed hypothetical," You reply with a soft laugh.

"Would be hot as fuck though," Lyra replies.

"Yeah, it would be," You agree with a nervous laugh.

"Look at you, exploring your kinky side," Lyra replies with a soft laugh, caught off guard by your response.

"Well if you're going to be the Futa Momma to my babies, makes sense I start trying to see things from your perspective," You reply with a grin, enjoying seeing your younger Sister fumble as much as you normally do in these situations.

"Alright, Fuck these smores I have a much better idea," Lyra says, grabbing you by the arm and pulling you towards your parents' tent.

"Sis, our tents the other way," You say.

"Yes it is, but right now I want to sneak close to our parents' tents and fuck you against a tree, while we listen to them go at it," Lyra explains, pulling you into the trees once you start getting close enough to your parents' tent to make out sounds of what they're doing.

Before you have a chance to fully get a footing, you find yourself back to a tree with your Sister sliding your panties to the side and slipping her rock-hard cock into your slick channel. Knowing that if you're close enough to hear your parents, they'd probably be able to hear you, you bury your head into Lyra's shoulder and muffle your groan of pleasure into her.

"What if they hear us," Your Mother protests.

"They won't," Genevieve replies softly, kissing your Mother's naked body.

"Can't we just have normal sex," Your Mother replies. "Especially after how poorly you've been behaving around our Daughters," She adds hopefully.

"Please Judy, I promise you the results will be worth it," Genevieve replies with a giggle.

"Fine," Your Mother replies, "I really hope the girls don't find out," Your Mother replies. "Pretending to be our Daughters while we fuck, it's a little weird," She adds with a nervous smile.

"Oh please, you enjoy it as much as I do," Genevieve replies with a giggle.

"I know," Your Mother replies with a hiss of pleasure as Genevieve takes a swollen nipple into her mouth and sucks hard. "God you're such a bad influence on me," Your Mother adds with a soft moan.

"Yeah, but still one loveless marriage is a small price to pay for such beautiful daughters, wouldn't you agree?" Genevieve replies with a laugh. "Practically a bargain," She adds with a sensual purr.

"Such a good deal you sold me on it twice," Your Mother replies with a giggle.

"Yeah I did," Genevieve replies with a laugh. "Now be a good slut 'Misty' and spread them for your Momma," She growls in a seductive manner.

You can scarcely believe what you're hearing as you cling to your Sister while she rails you against the tree, although given what you're currently doing with Lyra it seems perhaps that your Momma and Mother's secret shouldn't be that much of a surprise. Lyra's cock thundering back and forth through the slick tight channels of your pussy, while you hear your Momma roleplaying fucking you with your Mother as a proxy. Suddenly Lyra's bold promise of getting your parents to accept your taboo relationship seems far less unlikely.

It takes a monumental effort for Lyra not to blow her load deep inside your unprotected pussy for the third time that day, at hearing what her Mother and Momma are getting up to. It would have been taboo enough fucking you again so close, then again while listening to her Mother and Momma have some intimate fun of their own, but to hear them roleplaying what she wants to make a reality is almost too much for Lyra to handle. Lyra's devious mind whirrs with possibilities as she continues to pound you hard, her balls churning and writhing overtime to ensure there's a fresh heavy load of potent baby makers to join the hunt in her Sister's snatch.

By the time Lyra is pressing her body heavily against yours suppressing her grunts and groans of pleasure as your Sister's cock throbs and pulses, delivering a fresh hot eruption of cum deep into your core, Lyra has a plan. Using your sweet ass as a lure to try and tempt Momma Genevieve with a bit of the real thing, seeing just how deep the fantasy goes. Naturally, Lyra wouldn't allow things to get too carried away, since while she values her prize of getting to slip between her Mother and possibly even her Momma's legs, she wouldn't risk letting someone else knock you up before she's had the honour.