The Twins
Copyright© 2001 by Martina2023
Chapter 3
Incest Sex Story: Chapter 3 - A pair of 16 year old twins stumble into a sexual relationship that takes them to the very edges of biological reproduction, where they become the guinea pigs...
Caution: This Incest Sex Story contains strong sexual content, including mt/ft Lesbian Zoophilia Incest Sex Toys Bestiality Pregnancy
Lisa was now three months gone and beginning to show if she wore her usual tight fitting clothes. Joe had arranged for her to be 'cleansed' daily... This involved a daily enema whilst he pretended to be a male medical orderly ordering her to follow his instructions without question. Lisa loved it! He would order her to strip to her underwear and insert a large rubber tube in her backside and pour two litres of ice cold water via a funnel into her. She orgasmed as she felt the cold invasion of her rectum. Joe would insist that she then walk around the room without letting any of the liquid escape. Her anal muscles needed to be incredibly strong to hold this amount but Lisa often achieved it. On the rare occasion that she allowed a small amount of the light brown liquid to leak he would take her across his lap and smack her bottom. She liked this even better... Then he would wait for a varying amount of time before giving her permission to expel the smelly liquid into the toilet. Lisa got off on doing this as well. She enjoyed it more if Joe forced her to wait for a long period...
Joe had found one of her old bras in her bedroom drawers. It was a size 34B and he made her squeeze her massive breasts into it. The sight of her naked body with just this skimpy pink bra was amazing. Only about one quarter of her mammary flesh was contained by it. The other three quarters spilled over obscenely... He made her dance until the thin material could no longer hold out and her breasts escaped. Then the under-wired bra acted as a platform and made then look even bigger. Joe masturbated as before until Lisa dropped onto his penis this time facing him so he could see her heaving breasts and fat belly.
It was decision time. What were they going to do about her pregnancy?
"I made up my mind." she said "Your going to be a father..."
"Surely not!" exclaimed Joe "Mum and dad will go spare."
"Leave them to me." she answered, "I want to experience the whole deal... labour, contractions, stitches, everything..."
Joe was amazed. His sister was going to make him a father. She would not change her mind. The next night she informed her parents and after the initial shock, demanded to know who the father was. She gave the same story to then as she did to the doctor. They seemed to accept it and turned their attention to her welfare. Joe was not supposed to know until she could no longer hide it! This made her smile...
That night when Joe crept to her bed she reminded him about his promise to pay for her breast enhancement after the birth. Joe had not forgotten and promised to enquire about the procedure the next day.
Joe discovered that the going rate was roughly three thousand pounds which he could afford as he had that already in his building society account. He was advised to make an appointment for counselling and bring his 'girlfriend' along the following week.
The next week they were sitting in the consulting room at Brynside Clinic facing the consultant doctor. "If you are determined to go through with this for purely cosmetic reasons" he advised "then you should have the operation as soon as the baby is born. This will ensure that the breast tissue is still stretched from your pregnancy and will enable you to more easily accept the implants. Now what size are you ultimately trying to achieve?"
When Lisa informed him that she wanted either 34GG or 34H the doctor strongly advised her to think again. "Young lady," he frowned "think about the long term strain of carrying this sort of weight on your small frame. You run the risk of making a freakshow of your body."
But Lisa was adamant. All or nothing...
When he could see how determined she was he offered a compromise. Some of his patients had implants that allowed a saline solution to be injected when required and then removed when the weight became uncomfortable. A small valve would be placed under each breast. Lisa's heart skipped a beat in excitement and said firmly "That will do nicely. Please arrange an appointment for me now."
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