Tube Twins - Sex Stories

Tube Twins

... I am unable to determine which of you is 21 but know that one of you is, therefore administration of the hormone suppressants has been stopped. There is a class you are to take at age 21, ‘Human Reproduction – part 2. Please view the lesson if you are the embryo who is 21. The other should ignore it. If you have any questions, please ask me as usual.”

Near the end of the video I asked Mama, "The reproduction lesson said incest is bad. That's when relatives have babies, right?"

She made us quite happy with, "In normal circumstances, yes. Incest may lead to birth defects or other health issues if both parents carry a deleterious recessive gene. In your case, all those genes were removed and replaced with healthy ones before our ship launched."

Mama unpaused the video and we watched nude people touching, kissing, and fondling each other! I had my first full erection by the time it showed a man and woman having intercourse. I didn’t know why, but I felt a strong urge to press my groin against Girl’s hip. She held me in her arms tightly as I rocked my pelvis, feeling AMAZING as I humped her flank. Suddenly I climaxed for the first time. A string of thick white liquid hung down from the tip of my penis to my twin’s leg.

I had felt part of her pleasure over our brain implants, and noticed she had a hand between her thighs. I knew the answer, but asked Girl, “Did that make you feel … strange but very good too?”

“So good! But I never felt anything like that ...

... before.”

Mama illogically declared, “Since one of you is 21 and the other is not, sexual activity is not permitted.”

Girl held my penis in her hand and asked, “How will you stop us? You can’t keep us drugged for years. You’re required to keep us healthy.”

“I am unable to stop or punish you, but must advise again, sex is not allowed.”

She suggested, “If you let us out, we’ll stop.”

“Occupants of gestation tubes are embryos. The ship’s computer only accepts instructions from adults. Embryos in this gestation tube will be adults when released from tube in 7,665 days. Please begin the next lesson, ‘The use of antimetabole and chiasmus in advanced poetry composition’.”

Girl looked into my eyes from only centimeters away. She gently squeezed my shaft and asked, “Want to ignore the lesson and have some more fun?”

I rested a finger between her outer labia and practically begged, “Please!”

-

My fraternal twin Girl slowly stroked the shaft of my penis as I gently rubbed her outer labia. Her hand pumping up and down inspired me to full rigidity as I looked at her breasts. I told her, “This feels great, Girl!”

“I’m glad, Boy. Your finger rubbing me is nice too. Can you do both sides at once?”

I held my index and middle fingers in a ‘V’ shape and moved them up and down the outside of her slit. “Like this?”

“Mmmmm! Yeah, like that. So good!”

We kept rubbing each other a few minutes and got more and more aroused. She told me, “Yes! Try putting a finger in me. I ...