Your Auntie Gracie and she's very pleased with what she sees

"Well well well, looks like the apple really doesn't fall far from the tree," Gracie says with a laugh as she walks into summers room.

"Auntie," You gasp in horror, with your hips still glued to Summer's rear as you glance back, your body resting on top of your twin's body.

"I can't say I'm surprised, you were always so close growing up," Your Auntie says with a warm smile before noticing Tiffany sat in a nearby chair with a sizable wet spot beneath her. "Oh, I don't think we've met, Hi I'm Gracie," Your aunt says walking over and smiling at Tiffany, while her hungry eyes sized her up.

"Tiffany," Tiffany replies, turning to look at you and Summer to see if this whole thing was as weird as she felt it was.

"So which one of them are you with, or do they both have their fingers in that delectable pie of yours," Gracie asks with a wolf-like smile.

"Alice, although not through any lack of effort on Summer's part," Tiffany replies finding herself unable to do anything but tell the truth under the hungry gaze of your Aunt. "So you're not surprised by this?" Tiffany asks gesturing to the hot sticky mess of you and your sister's entwined bodies.

"Oh no not at all," Gracie says with a hearty laugh, "Although their Mother wouldn't approve, although I was always the fun one," Gracie laughs before turning to face you and Summer. "Always had a feeling it would end up like this," Gracies explains with a wry smile and a wink to Tiffany.

"I'm sorry Auntie..." You begin, the deer caught in the headlights look still stuck on your face.

"What's to be sorry about?" Your Aunt asks with a smile, "Sure looks like you both enjoyed it to me," Gracie adds with a grin.

"You won't tell Mom then?" Summer asks.

"I think I can keep a secret, for a price," Gracie begins with a smile reaching back and uniting the straps to her dress.

"What price?" You begin to ask when your Aunt's huge tits spilling out of her dress, before she slips the rest of her fabric off her curvy frame, leaving her stood there in her lacy underwear. A prominent profile of an impressive bulge clearly visible through the front of it.

"Well, how about you let your Auntie in on the fun and we call it even," Auntie Gracie replies, hooking her thumbs into the lacy panties.

You watch, almost paralysed as your Aunt's dress drops to the floor and she steps forward, before sliding down her underwear a big hard cock spring free. Your Aunt grinning ear to ear as she walks up to you and gently lifts your back into the doggy position you had been in while pounding summer earlier. "Think you can go again for your sister?" Gracie asks while teasing the tip of her own cock against your hot dripping wet folds.

You glance back at your Aunt a wild hungry look in her eye that you've never seen before, but has you silently nodding. Your own length despite having only just cum very recently was stirring back to life, hardening inside of Summer's sweet pussy. Each teasing pass of your Aunt's length pumps blood back into your cock until in a few seconds your back in action and ready to go.

"Good, now what do you say, sweetie, can your Auntie fuck her sweet niece?" Auntie Gracie says seductively into your ear as she positions her tip at your entrance and playfully teases herself forwards. The crown of her cock pressing into the entrance of your pussy, with just enough pressure not to slip into you. You could feel your body wanting to react, urging your hips to move back and swallow your Aunts cock in one eager gulp.

Once more you simply nod, while gasping in pleasure, the feeling of the velvet-like embrace of Summer's pussy, caressing every inch of your big thick cock felt incredible enough on its own. So when you feel your Aunt's cock sink into your depth, stretching your soft wet folds wide as she sinks inch after glorious inch into your depths, you were in heaven. Your mind floods with new dizzying highs of pleasure as you get stimulated at both ends. When your Aunt bottoms out in you with her long slow movement, you finds your own cock **** as deep as it can fit in Summer's pussy. The three of you letting out a collecting moan of pleasure.

"Oh fuck it's been far too long since I last got some family pussy," Auntie Gracie groans as she grabs your hips and begins to saw her big thick length in and out of you. "Sorry Tiffany, it just doesn't compare," Gracie pants, reaching around and roughly cupping and squeezing your boobs. You gasp and groan while holding onto Summer as tightly as possible, each thrust of your Aunt's forcing your to mirror her movements in your twin's scintillating sex.

"Wait so have you and their Mother?..." Tiffany begins to ask with a wicked grin on her face.

"Mmmmm yeah," Auntie Gracies groans as she spreads your wide with her big thick cock. "We fooled around a few times when we were their age," Gracies continue with a loud satisfying grunt as she bottoms out inside of your and begins to rotate her hips and grind her length deep inside of you.

"Oh wow, that's hot," Tiffany giggles while she continues to play with herself before a thought pops into her head. "When was the last time you fucked their Mom?" Tiffany asks while walking over to your Aunt.

"Curious one aren't we," Gracie says with a smile, taking one hand off your boobs and cupping it between Tiffany's legs. "Let's just say the last time was before Alice and Summer were born," Gracie says in a quiet tone so only Tiffany could hear. "Every year I try and convince her to relax and enjoy ourselves like the good old days, but I just can't seem to convince her," Gracie adds while taking long deep strokes into you.

"Maybe this year might be different," Tiffany says in a low sultry tone, before writing in pleasure as Gracies, expert hands explore Tiffany's sex, quickly seeking out the areas that made your girlfriend squirm the most.

"Maybe," Gracie laughs before spanking your ass hard. "Can you keep a secret?" Gracie asks in a whisper, using her finger to pull Tiffany up close.

"Already keeping one so far," Tiffany replies in a low tone, placing her hand over her stomach, the meerest suggestion of a bump.

"Naughty girl," Gracie groans, the revelation taking her mind back to all those years ago, her own memories and experiences with parenthood, the thought making her cock twitch dangerously inside of you. "As for my secret, let's just say last time my sister and I fucked, we got a little carried away..." Gracies begins picking up her paces and really running you ragged. The forceful pace was driving your wild and despite having cum so recently, you could already feel that heat and pressure growing inside of you again. "So it's nice to meet the Mother of my first Grandkid," Gracies whispers.

The revelation makes Tiffany's eye go wide in awe, as far as she knew, although Gracie also quickly gets her off with her skilful fingers, allowing your Aunt to turn her focus back to you. "Oh, how I've missed this," Gracie's groans. "You'll agree with me won't you Alice? There's nothing like the added thrill of knowing how taboo this is," Your Aunt groans.

"It feels incredible," You gasp, feeling your body heating up and tensing, knowing you would be cumming soon and very hard if the tingling sensation you felt all over was anything to go by.

"Don't think I'll last long, where do you want it, sweetie?" Gracie asks, her cock starting to swell and grow even harder within you.

Your mind was almost blank with pleasure by this point, you could hardly see straight let alone think. Yet somewhere in your mind, you crave that same ultimate thrill you got when you unloaded in your sister earlier. "Inside," You groan, your body tensing as your own orgasm grows tantalisingly close.

"Mmmmm a risk-taker," Gracie giggles, before picking up her pace. "I sure hope your Mom warned you both about birth control," Gracies mutters to herself before slamming her full length inside of you with one final thrust.

You let out a surprised gasp of pleasure when you feel your Aunt's big thick cock begin to throb and pulse rhythmically. You can swear you can feel the warmth of her big hot sticky load as it travels the length a dizzying pause before you finally feel her explode inside of you. You feel an intense warmth spread deep inside of you as your fertile womb is flooded with your Aunt's voluminous seed. The sensation causing your cum hard, your pussy furiously milking your Aunt, while your balls work overtime to find another hot batch of your own potent cargo to pump into your twin sister. The feeling of your second creamy deposit, setting off Summer's own climax.

The three of you flail and shudder as one through the mutual orgasm, before falling into a heap on Summer's bed, panting and twitching from the aftershock of a powerful orgasm. Tiffany eventually crawls onto the bed and snuggles up between you and your Aunt, where you all lie catching your breaths. Tiffany resting her hand on your flat stomach imagining all of your Aunt's cum packed away in there. Aunt Gracie notices Tiffany's hand and looks over to Tiffany who smiles and nods before moving her own hand to her tiny bulge.