Tube Twins - Sex Stories

Tube Twins

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The large plastic cylinder contained our entire liquid-filled world. We couldn’t see anything outside and had no idea the Universe was any larger. We could touch our elbows to opposite sides of the plastic pipe’s interior at the same time. If I stood on tiptoe, I could just reach the top of our cylindrical home and prison. My fraternal twin sister was half a hand too short. Our knees and arms were in almost constant physical contact. Unless we made an effort to stand upright, our buttocks pressed against the inside of the cylinder. When we slept, our chins rested on each other’s shoulders.

Computerized implants the size of rice grains had been inserted into our brains when we were less than a year old. We received several lessons a day from the ship’s computer over them. They allowed us to ‘talk’ to each other, in a way. I could sense most of my twin’s emotions, and she could feel mine. Once we learned to read at fifteen months old, we could also send written messages to each other or the ship’s computer, who we called ‘Mama’. Mama called me ‘Boy’ and my twin ‘Girl’, so those became our names.

Long, long ago Mama had explained the umbilical cords attached to our navels were critically important, and repeated the message daily for years. We should never do anything that might tangle or damage them. They supplied all we needed; food, oxygen, and waste removal. Without them, we would quickly die.

Two thirds of our lives ago, when we had been in the incubation ...

... chamber seven years, we each woke with a pair of tubes in our mouths and noses. The larger hoses allowed us to breathe air for the first time. The others delivered liquified food directly to our stomachs. We had no space to exercise, and unless we made a major effort to reposition ourselves, one of Girl’s feet was always between mine, and vice versa. At the time we were unaware our food tubes also gave us a mild lethargy drug, to reduce the chance we would move around and disrupt our umbilicals or hoses.

Two days after our first liquid meal, we got a few surprises. I felt pressure and discomfort in my lower abdomen, then relief as waste left my body through my buttocks. We were amused as the yellowish-brown cloud slowly descended and expanded to cover our lower legs. We also urinated into the liquid surrounding us, but Mama had assured us it wouldn’t cause any harm. There was always a very slow flow of liquid coming from above and exiting our plastic home at the bottom. We were shocked as a rapid current flushed most of the liquid from our tube and refilled it with pure and cooler liquid. Not long after I did, Girl defecated too. Our tube was automatically flushed again to clear out her waste cloud.

Between the multitudes of lessons, we watched a lot of old videos for entertainment. One had a character named Fonzie, who we thought was hilarious. We were approaching eight years old, and to us ‘being cool’ meant the tube was flushing because one of us had just pooped. To our ...