The cold air of the room made her shiver but despite the low temperature her pride was slowly melting as the head of the dildo approached against her asshole. A few years back she had had anal sex with a guy several times but she never had anything as bis as this in her rear hole.

For sure this is not the biggest dildo in existence but the most special thing about it was it’s design. The head was spherical with a narrower gap right after it that would allow her sphincter to close one last time before it continues its descend on the shaft. The rest of the 14 inch dildo was covered with ribs with sharp edges and each succeeding rib was slightly larger which had to guarantee that the 22 year old girl will feel every step of her anal destruction.

Next thing she felt was the head of the dildo completely inside her. She moaned and hesitated. A few hours ago the humble 22 year old Michelle couldn’t have imagined that later that evening she will be completely naked and exposed in a room with two almost complete strangers.

The man beside her was increasing the pressure on her shoulders impaling her body on the 14 inch ribbed dildo. Maybe she could have concentrate to try to deal with the increasing pain if it wasn’t for the woman in front of her who was holding a mirror infront of her, making it possible for Michelle to watch every ring of the shaft disappearing in her asshole.

The dildo was only an inch and a half at his head and a bit over 3 inches at its base so going down wasn’t that easy. The man didn’t seem to care about the pain Michelle was experiencing and pressed harder leaving her no time to accommodate to the feeling of the large intruder penetrating her rectum.

It felt like eternity but actually only 10 minutes had passed when with one final push the last rib of the dildo popped inside and her stretched sphincter tried to close behind it announcing her complete impalement. The sharp pain and the view of the small bulge the dildo was forming on her stomach caused her to faint.

She couldn't say exactly how long it had been while she was unconscious, but coming to her senses she realized that something was wrong. Not only her vague memories were completely real and not just a dream, but what she saw in the mirror scared her to death.

Michelle saw her arms tied to a beam passing above her. She was sitting on something like a chair with the large dildo still deep inside her asshole. Her legs were tied to the ground spread but the thing that was very strange was that the girl from the image in the mirror had a strange device attached to her pussy. Michelle couldn’t believe of what she was seeing in the mirror and looked down in horror to realise the image wasn’t lying. There was some slightly curved electronic device with a few blinking lights copying the form of her labia that was inserted in her cunt. Seven tiny metal rods part of the device were now piercing her once soft and tender pussy lips keeping it attached for eternity to her body while her clit was completely inside the upper part of the machine.

As time passed she sensed muffled buzzing sound that was growing inside of her genitalia. She realised that the part of the device that was in her was starting to vibrate. After a few minutes her twat was on fire from the intense sensations and the device started sending electroshocks through her body. The vibrating part was torturing the insides of her cunt and another electrode was seemingly trying to burn her clitoris.

The unimaginable torture made her squirm. She was straining the ropes with frantic movents. After a while she realised that lifting herself up not only was easing the numb feeling in her ass as the thickest part of the dildo was leaving her orifice but also the electroshocks were becoming a lot weaker.

Michelle was unable to hold for more then few seconds and soon she was sliding back on the monster cock. The fear of the electricity gave her the strength to rise again and again she wasn’t able to keep her position for long. She soon understood that establishing a steady rhythm on the dildo was protecting her from the electroshocks.

Now Michelle was fucking herself on the dildo. The countless times her sphincter stretched on the ribbed cock in the next hour or so made sure that her asshole would never recover slowly reducing it into nothing more than a shitting fuckhole.

Now the dildo was not meeting any resistance entering her rectum after every failed attempt she made to lift herself up from the impalement. For her surprise pleasure started to build up as the light buzzing into her cunt continued amplifying the sensations from the movements into her ruined asshole. Soon she had the most intense orgasm into her life, so intense that she lost complete control over her body and fell onto the monster dildo for one last time. Right after that she fainted.

...

She woke up to find herself now tied with her legs behind her head. The mirror was still in front of her and she couldn’t do anything but look at her image. She saw her once beautiful cunt liberated from the electrocuting device with her pussy lips now so deformed, stretched and perforated that they were now hanging like old rags leaving her opening exposed. Her sight stopped on the place where her asshole used to be but all the monster ribbed dildo had left there was a reddish mixture of her now partially prolapsing rectum and the distended ring of her tortured sphincter...