Author's Note

Sorry, if I am not differentiating, between the two characters; but I am seeing the twins as too close, for them to make the distinction in these terms.

Part One, of two

With a Sex-Doll Inside: 4 Part 1

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Our parents had just left the house, over the week-end. I, and my twin-sister had been awaiting the moment; together, and alone for an entire week-end. Just the two of us.

They had planned this trip, a month ago; preparing everything, for the two of us to make it alone. Including; preparing for the two of us, each meal carefully prepared for the entire week-end.

We had made our own preparations; I had ordered two sets of tubes for the two of us to use, to have a little fun on the side. A little bit of excitement, they did not know of.

She had ordered supplies, she apparently had forgotten to let me in on. The lubrication, the plot-gel, the set of bonding for each of the items I had ordered.

On second though; I had also ordered a set of plugs, I had forgotten to mention. Anal, vaginal, oral. Even one for the belly button. I was not entirely sure, as to how it works or its purpose; but it had been included in the package, so I could as well accept it.

Picking up the package, at the mail-office had been as easy as it had been to carry it home, unnoticed. Once the package is home; I had examined its content and compared it with the list of items I had ordered. Everything had been there. I had hidden the small package away, never letting on that I even had it in the first place. Now the day has arrived. I am enjoying a nice meal with my sister; as we are bidding them fare-well, on their planned trip.

Mother and father left, as we were eating; we did not get up, but finished the meal. We could wait, for a few more minutes; leaving no clue, as to what we had been planning. They did not know, what we were up to. Maybe they would needlessly worry; or shorten, or even cancel the trip altogether.

The car left the private parking-space outside the villa, as we continue to eat. We even washed the dishes, and slipped them into the washer.

”Okay; they have left, so I guess it is safe to come out!” I suggest, as we finished stuff the washer with the last of the dishes of our meal.

”Yes, it should be quite safe now; if you pull out your stash, I will pull out mine!” she responds; ”See you in the attic, in a few minutes!” she then adds.

”Okay; the attic it is, should be safe enough up there!” I respond, as I am walking toward my room.

I notice her going towards her room, just as I know she had seen me moving towards my room; no point in hiding it for her, at this point.

Once I reach my room, I open the door and step right in; closing the door behind myself, before I continue towards the secret stash. Now I pull out the packages, break them open and extract the desired items; for both my sister and me, for the entire adventure.

I sort the items in two small containers; one for me, and one for her. Taking both containers in my left hand, as I hide the rest of the stash for later use. I walk back to the door, open it and step out; before I close the door behind myself and heads towards the stairs up towards the attic.

With the price in hand, I scurry up the flight of stairs, before I continue up the next flight of stairs; ending up, in the attic, as we had agreed upon. Just a minute after me, she follows me up.

”I guess, we finally are doing this!” I merely point out.

”Yes, are you ready to undress; so that we can do this, now?” she inquires, in response.

”Of course, silly!” I respond, giggling.

”You handle your stash, and I handle mine?” she inquires.

”I wouldn’t have it, any other way!” I point out; as I am letting my skirt fall to the floor, before her.

”I was hoping, you would say that!” she points out, as she is pulling her top up, over her head.

It would have been convenient, if we had had a wardrobe in the room; but we did not even pull up a pair of simple chairs, up here. Partially, because we did not want to leave a sign; of what we were planning for the weekend, of course. Though the clothes could be washed off; after we have had our adventure, up here.

I pull my socks off of my feet, right and left; before I am slipping my panties don, finally finding myself stark naked. She is standing nude, beside me; merely waiting, for me to initiate our adventure.

”Would you like to do me, right after I do you?” I inquire.

”Yes, please!” she responds; ”I was hoping you would offer, to help me; so that I can help you, in turn!” she responds.

”If you walk up to the wall, and place your hands firmly on the wall beside you!” I instruct her.

”Of course!” she responds, as she is walking up to the wall; spreading her fingers, as she is pressing her hands onto the wall beside herself.

”Okay, here goes!” I offer; ”I hope you are ready!” I conclude.

”Okay, let me have it!” she offers; ”Insert my tube; but be gentle, please!” she continues.

”Of course!” I respond; as I pick up the anal tube, I had selected for her.

The tube is semi-clear, cerise and three inches long; feeling pretty stiff and should leave her wide open and exposed for advances. At least, so I had imagined, as I chose this tube as I ordered them.

”Just relax, and this should be smooth!” I offer, as I insert her tube.

”Oooh; oh, oh!” she response, as she feels the tube touch her rump, and consequently slides right in effortlessly.

”Oo-o-o-o-o-oh!” she sighs, as the membrane is extending into her rear entrance and spreads as far in as she could perceive it.

”How was it, and how does it feel?” I inquire; ”I hope you are still prepared; to extend the favour to me, too!” I offer.

”It was a bit intense, and the sensation of the tube invading my rump is odd!” she responds; I think I am ready, if you are!” she continues; ”Just hand over the tube and assume the position, so that I can do you!” she points out.

”Okay!” I respond, as I hand the intended tube over; before I am assuming the position, just as she had a mere moment before.

She happily accept the offered tube, I am banding her; before she is preparing, to insert the tube into my rear orifice.

”Let me have it, please; I need to feel it inserted, so that I can share the experience with you!” I prompts, eagerly.

”Okay, here you go!” she offers, as she is introducing the tube to my rump; ”I hope you will be enjoying this!” she continues, as she is starting to insert the tube; ”Because you will be having it inside you for a while, now!” she concludes as she lets go of the tube.

”Oooh; oh, oh!” I sigh, as I feel the tube inserted into my rear orifice.

”Ooh-o-o-o-o--oh!” I sigh, as I feel its membrane spreading further and further into the orifice and finally beyond where I could even consciously feel it.

”I take it, you are enjoying the experience!” she offers, as she is producing a pencil not too dissimilar to a regular lip-liner, and finally draws the line along the rim of the inserted tube.

”Oh, oh, oh; ooh!” I sigh; as she is bonding the tube to my orifice, and the skin stretches towards the tube and fuses securely with it.

”Your turn, to do me!” she offers; ”I hope you can make it for me, too!” she continues.

”Okay!” I respond, ”I hope I can do you, just right!” I add, and she turns around; presenting her exposed rump, to me.

I accept the pencil; then I start drawing the line around her tube, slowly and carefully. Just as I complete the line around the border, and pull the pencil away from her; I notice how the skin and the tube is bonding, and pulling together.

”Oh!” I exclaim, as I observe the effect firsthand on her; ”That is what happens!” I breathe.

”That, certainly was intense!” she pronounces, in response to the experience.

”If you turn around, so that I can insert your vaginal tube?” I offer; while still holding on to the pencil, for her.

”Oh, okay!” she responds; ”Of course!” she continues, as she is turning around to face me.

As she is turning around; I am extracting her vaginal tube, ready to insert it as she is presenting the opportunity.

”Ready?” I inquire.

”Yes, please insert the tube now!” she responds.

”Okay!” I respond; as I extend my right hand, slowly inserting the tube into her vagina.

”Oooh; oh, oh!” she responds, as she feels the tube touch her vagina, and consequently slides right in effortlessly.

”Oo-oo-oo-oo-oo-oh!” she sighs, as the membrane is extending into her vagina and spreads all the way into the bottom of her womb.

”I take it, you are enjoying this!” I offer; ”Then I will go right ahead, and bond the tube into place!” I propose.

”Oh, oh; yes, please do!” she responds.

”She will not have to ask me twice, not if she enjoys it that much!” I ponder; as I draw the line around the border of her vaginal tube; ”There, hope this is good!” I respond.

”May I?” she inquires, indicating she would like to insert my vaginal tube for me.

”Yes, by all means; please do!” I respond, as I offer her the intended vaginal tube.

She accepts the tube; extending her right hand; slowly inserting the tub, into my vagina.

”Ooh-oo-oo-oo-oo-oh!” I sigh, as I feel the tube entering my vagina, and the membrane slowly spreading all the way into the very bottom of my womb.

”Oh, oh, oh; ooh!” I sigh; as she is bonding the tube to my vagina, and the skin stretches towards the tube and fuses securely with it.

”If you like; you could insert the next tube!” I offer; ”it goes into the belly button!” I explain, as I offer her the next tube.

”Okay!” she responds; ”While I had not exactly expected it, but I have an idea; this would be perfect for, if you don’t mind!” she points out.

She accepts the tube; extending her right hand; slowly inserting the tube, into my belly button.

”Ooh-oh-oh-ooh!” I sigh; as I feel the tube enter my belly button, and spread all the way in.

”It was included in the set; though I am not entirely sure, exactly why it was included!” I point out.

”Including it does not make sense, to me either; but right now, it gives me an idea how I can make it useful!” she points out, as she is producing a pencil.

”Master Bond” the label reads; as opposed to the pencil I am still holding, marked ”Submissive Bond”.
She draws a line, around the tube she just inserted into my belly button.

”Oooh-oh-oh-oh-ooh!” I sigh; as I feel its effect taking hold, as the tube is bonded to my belly button and stretches in order to meet the tube half way.

”I barely felt the insertion itself; but I still did feel the applied bond, just as I am still feeling it!” I offer.

Now I pick up her belly button tube, extending my right hand towards her; ”May I?” I inquire.

”Yes, please!” she responds, serving me the cue to proceed.

With that, I insert the tube into her belly button. She hands me the pencil she had been holing, and I am accepting it; now applying the bond, by drawing the line around the edge of her tube.

”Oooh-oh-oh-oh-ooh!” she sighs, as she feels the bond taking effect, and merging the tube into her belly button.

”Okay, are you ready?” I inquire; ”The final and last tube!” I explain.

”The oral tube?” she inquires; ”Yes, please!” she offers.

”Yes, exactly!” I confirm; ”Then I will insert your oral tube fore you!” I point out.

I extend my right hand, holding the metallic bloody red tube; slowly inserting the oral tube into her mouth, slipping it in between her lips.

Since the tube enters her mouth, as it is slipping in between her lips; she can not make any noises, at this time. With that, she remains quiet.

”Ooooh-ooh-ooh-ooh..” she sighs, as she feels the membrane spread into her mouth and down her throat, only to be cut short as the tube is reaching her vocal cords.

”-ooh-ooh-ooooh!” she sighs inwardly, as the membrane continues to spread down her throat.

I apply the bond, drawing the line along the border of her lips; effectively bonding the oral tube into her mouth, as it is fusing with her flesh and leaves her lips with a red hue.

”My turn!” she ponders; as she is extending her right hand, to accept the tube she is to insert into my mouth.

”I would not have it any other way!” I point out; ”Here you go; please insert the tube into my mouth, and bond it securely!” I urge her, eagerly.

”Thank you!” she ponders, as she is accepting the tube.

I watch her, as she is accepting the tube; her lips slightly parted, as the tube still is maintaining its grip. I had not quite expected it; but I guess it should have been the case, going by the description of the tubes and how they feel in my hand.

A moment later, I feel the touch of the tube I had just offered her touching my lips; as she is inserting it into my mouth, and it is slipping in between my lips.

”Ooooh-ooh-ooh-ooh..” sigh, as I feel the membrane spreading into my mouth and down my throat, only to be cut short, as it is reaching my vocal cords.

”-ooh-ooh-ooooh!” I sigh, inwardly, as I feel the membrane continue to spread down my throat.

She applies the bond, drawing the line along the border of my lips; effectively bonding the oral tube into my mouth, as it is fusing with my flesh and leaves my lips with a red hue.

”Maybe I should have been considering this possibility; preparing for how to react as it does?” I ponder.

”How do I ask her, if she is ready; since I can’t even pronounce a single word?” I ponder.

”I guess I could as well continue, with the next step; assuming she will accept, what I am offering her!” she ponders, as she is picking up the plot-gel applicator.

She is pointing at her orifices, one at the time; indicating an option, she should apply the gel into first. She signs for me to turn around; as I am nodding, when she is pointing at her rump.

”Okay; I guess we are taking it in the same order, as we inserted and bonded the tubes?” she ponders.

With that; I am once more assuming the position, in preparation for what she has to offer. I am presenting my rump; waiting for her to do, what she had in mind to do for me. A moment later; I feel the highly viscous gel touching the outer edge of my anal orifice, before it is slowly spreading inwards. As it goes; the gel is vulcanizing the inner walls of my anal cavity, as far as I could feel it.

She is tapping my right shoulder; indicating for me, to accept the applicator and do her in turn.

I accept the applicator, as I watch her assume the position before the wall; before I carefully expose her to the same effect, she had just offered me.

As I am pulling back, she is turning around; indicating for me to continue, applying the gel to her vagina in turn.

I press the tip of the applicator to her vagina; exposing her orifice to the gel, thus vulcanizing her vagina. In doing so; I am fully aware of that she will extend the same favour to me, accepting it without reservation.

Once I had completed the application; I had it over to her, expecting her to do me, as I had just done her.

She is accepting it, eagerly; pressing the muzzle of the applicator to my vagina, applying the gel. In effect; I feel how my vagina is turning into stiff rubber, highly elastic and with a coarse surface.

Now she is lifting the applicator towards the next orifice, my belly button; pressing it in, spreading the gel that vulcanizes my belly button from the inside and out. Only to hand the applicator over to me; fully expecting me to accept, and then to do her in turn.

I am accepting the applicator, applying it onto her belly button; watching her, as she is experiencing the effect of the gel vulcanizing another part of her.

Once I had seen the orifice, of her belly button fully vulcanized true and through; I lift the applicator up towards her face, carefully aiming it at her mouth. As she does not back away; I apply the gel onto her lips, watching the effect spread over her lips and into her mouth.

”Okay; now I am going to accept this, for myself as well!” I realize.

The gel slowly spreads into her mouth and down her throat. Once the effect is taking hold; I am handing the applicator over to her, expecting her to do me and return the favour.

She accepts the applicator, calmly aping its muzzle towards my lips; spreading the gel onto my lips and into my mouth.

I feel the gel spreading out over my lips, as my lips starts to vulcanize; accepting the offer, and then feel the gel slowly spread into my mouth and down my throat. As the gel spreads further and further down my throat, I feel it affecting me, as it is vulcanizing the flesh upon contact.

I put the applicator down, as I had done her; before I am turning around, assuming the position. By doing so; I am giving her the cue, to continue with the next step.

In place of the plot-gel; this application is containing a lubrication. I feel the gel enter my rump, and spread further and further into me. I feel her tapping my shoulder, with the extended index-finger of her right hand; letting me know she is ready to assume the position and for me to lubricate her.

As I am accepting; she turns around and assumes the position, whereupon I apply the lubrication into her rear orifice.

Once I had applies the lubrication, into her rear orifice; from the inside and out, I tap her shoulder lightly in order to indicate that I had lubricated her.

She turns around, accepting the lubrication, and I assume the position; turning my back on her, as she is repeating the process, lubricating me from behind as intended.

”Oooh; oh, oh!” I sigh; as I feel the slippery and wet lubrication entering me, slowly lubricating me as it is spreading into me.

”Oo-o-o-o-oh!” I sigh, as the lubrication continues to spread all the way up my anal cavity.

As she had completed the process, she is once more tapping my right shoulder and I am turning around; waiting for her to comtinue, watching her, as she is applying the lubrication to my vagina.

”Oooh; oh, oh!” I sigh; as the lubrication touches my vagina.

”Ooo-oo-oo-oo-oo--oo-ooh!” I sigh, as the lubrication is spreading into me, coating the inside of my vagina all the way up and to the very bottom of my womb.

I find myself irrevocably wet and slippery, experiencing the first hint of the sensitivity and excitability invoked by the lubrication coating my vagina. Just that I do not have as much as a hint of a clue; as to how this is going to affect me, either short-term or on a longer perspective. How could I?

”I guess; this is something I, we will just have to get used to!” I realize, as she is withdrawing the lubrication applicator.

She is handing over the applicator, to me; I accept it, quietly and wholeheartedly.

Since she is standing before me, prepared to accept; what she had just given me; I continue the process, by applying the lubrication into her vagina, taking pleasure in her reaction on the lubrication entering and coating her vagina. While I do not exactly know how far in it is reaching, I only withdraw, as I know the lubrication is all the way in.

Now I apply the lubrication into her belly button; which only takes a short moment, but I feel I should still do it for her.

She is accepting the applicator, with a wide grin, on her face; showing, just how much she has already enjoyed what I had done for her. Or, maybe it is in anticipation; of applying the gel into me, once more? If I am affecting her, she is affecting me equally; as we are giving one-another exactly the same, in turn.

”Oooh; oh, oh!” I sigh, as she is applying the lubrication into my belly button.

”Okay, I guess this was a bit weird; but I am anticipating how exciting this will be!” I ponder.

”Ooo-oo-oo-oo-oo--oo-ooh!” I sigh, as the lubrication is spreading into me, slowly spreading into my mouth and further down my throat.

”I feel wet, all over again; and I am starting to be more excited, by just how wet she has made me!” I realize.

As she had lubricated my mouth, she is handing the applicator over, and I am accepting it; slowly and carefully returning the favour. Like twins; we are sharing everything, even if it is something one would have argued that we should not have done in this case.

I tap her shoulder, indicating for her to turn around; once more assuming the position, and she eagerly complies. If she is excited, over what she is imagining I am offering; or if she is just enjoying the idea of how she is about to return the favour. Yet, she is assuming the position; eagerly leaving me to do her, and do what I had intended to do in the first place.

Since she is leaning onto the wall, facing away from me; I am picking up the plug I had intended to insert into her anal cavity. I introduce the tip of the plug to her wet and readily awaiting orifice; slowly pushing it in, into her rear orifice; spreading her open, as I am filing her up.

Inch by inch, minute by minute; the plug is sliding in, into her wet and slippery orifice. Slowly, but unavoidably, spreading her wide open; as it is filing her up to the brim. As much as she may try to reject it, or push it out as it is dawning upon her, just how large the plug is; she is utterly incapable of stopping it or even slow it down in the least. As large as the plug may be, but the membrane is easily stretching enough; to permit the plug to slide in, as she is slippery and wet enough for it to continue in even as she is stretched taut.

The plug finally plops, and she is contracting; leaving only the base of the plug, outside of her orifice. I tap her shoulder; indicating that it is her turn, to return the favour. She turns around, with a dreamy expression on her face; clearly distract, by just how much the plug is stretching her anal cavity.

”I will make that very same expression, in just a moment!” I realize, knowing I had committed to accept sharing this experience with her.

I turn to the wall, assuming the position; preparing myself, for what she is about to give me.

”Oooh; oh, oh!” I sigh, as she is introducing the tip of my plug, onto the entrance of my rear orifice.

”Ooo-oo-oo-oo-oo-oo-oo-oo-ooh!” I sigh, as I feel the plug slowly spreading me open, and filling me up.

As the plug plop, I find myself contracting around it and thus pushing it the rest of the way in; as it is stretching me taut and filling me up to the brim. In the process; I find myself incapable of ignoring the presence of the inserted plug, as it is distracting me considerably.

”The more I try to ignore it, the more obvious its presence is!” I realize.

In a moment, I find my focus slipping; turning more and more to where I am going, and how excited and wet I am.

She certainly had taken her time, carefully inserting the tube as slowly as she had been able to; drawing out the experience of its insertion, heightening the emphasis of just how large the plug really is.

Before I have the time to adjust; I realize, how she is drawing a line around the border of the plug, thus effectively bonding it to my rump. It is effectively plugging me up, and is not going to come out, no matter what I may try. Even after the bond had been applied, I can’t ignore it; still feeling just how much it is distracting me.

As the bond is taking hold, she is applying a clear gel on the surface of the protruding base of the plug. As the surface had been completely covered and saturated with the gel; she is tapping my shoulder, indicating how she needs me to return the favour.

I turn around, and she is presenting me with the items; she is asking me to apply onto her, in the process. I already recognize the bond, even if it may be a slightly different variety.

”Dilation-aid Gel” the label reads.

She is turning around, presenting her plugged rump to me; and I draw the line along the border between the plug I had previously inserted, and the flesh of her rump. I can clearly see, how her flesh is stretching to merge with the plug, as the plug spreads in order for the two to bond fully.

Once the plug had been bonded to her, I apply the gel onto the surface of the exposed base of her plug; slowly and carefully coating the surface, as it is saturated with the clear gel she had offered me to apply.

With the plug inserted, and bonded; I am finding myself constantly conscious of just how wet and excited I am. Of course; I know my twin sister is experiencing it exactly the same, not just because she is my sister, but because she has been exposed to the same as I am.

”Something is missing!” I ponder; ”Of course; the gag I had ordered, for the occasion!” I realize.

I pick up the intended gag; not quite a plug, and not quite a tube. As she is facing me; I am introducing the tip of her gag to her lips, before I push forwards and the gag irrevocably and unhindered is slipping into her mouth and plops.

With the gag in place; I am applying the bond; by drawing a line around the border of her gag, thus fusing her lips around the gag.

”Cute, but utterly irresistible!” I realize, as I am watching her.

With that, I am handing her the gag; intended for her to insert, into my mouth. As she is accepting it; I feel the gag touches my lips, before it is sliding in and spreading my lips wide. I feel my lips being stretched taut.

Once the plug had plopped; she is drawing a line between the gag and my lips; bonding the gag to my lips, fusing the two as they merge seamlessly.

With my lips in a relentless grip of the gag, stretched taut; I can not show all that much of expression, right now. However, I can react on the feelings behind the expression; lifting a hand up, in order to cover a yawn, that is not quite showing.

I guess it is time to hit the sack, as I am tired and know I need to sleep after a long day; leaving the cue, for my sister to follow me down the stairs.