Growing as a Pair

"Don't worry mom." I said. "If I get hungry, I'll just eat Stephen."

She went back to my dad and we went up to our seats. The theater got dark and the trailer started. The theater was mostly empty as it wasn't a peak time. I got out of my seat and knelt in front of my brother.

"What are you doing?" He asked.

"I'm hungry." I replied, unbuttoning his pants. "I'm eating for three you know."

I slipped his cock inside my mouth and started rubbing it with my tongue. Then I started bobbing my lips shallowly up and down on the tip of his cock, applying vacuum to it. He started breathing heavier and holding the back of my head. Encouraged, I started going all the way down and all the way up. Taking it as deep as the seat would let me. I felt his cock twitch, and then it let loose in a torrent. I started to drown, but quickly got it under control and swallowed it all instead. I returned to my seat for the start of the movie, having finished up before the trailers were over. I felt a little movement in my womb. I leaned over to my brother.

"Your daughters thank you for their meal." I whispered.

We enjoyed the movie, and went home.

The next few weeks past pretty uneventfully. I took over my moms job waking my brother up for school. I told her that her grandbabies got me up anyway and it made things easier for me. Without her coming to intrude on my domain, I kept the guest house locked at night. My brother slept in my bed with me. We had sex a lot, and my belly just kept growing as his daughters slowly approached their birthday.

My brother graduated. Instead of making my brother have a summer job, my mom took pity on her pregnant waddling daughter and gave me my brother for my exclusive use. If she had any idea of how I used him I'm not sure she would have thought it such a good idea. My brother came in my pregnant pussy almost every day, sometimes several times a day. The weeks turned into months, and I started getting too large to even move around much. First the danger zone passed, and my children were viable outside of my womb. Then the day passed when the doctors anticipated I would go into labor passed. It looked like I was going to carry to full term. And then the due date passed. I started to get worried, what if they were mutants because they were incestuous offspring? What if they never came out? They came four days late.

I had foolishly decided to birth my children naturally. I made that decision when I thought they were going to be born early, and be smaller than average sized babies. Besides, they were twins, and there wasn't enough room for growth in my uterus I thought. I made it very clear in the birth plans I was not to get any drugs no matter what happened. When I explained my plan to the doctor, he made me sign a waiver before he would agree that he would reject any calls I made for pain killer. He told me if I changed my mind that I needed to tell him before the birth, because once I was in labor, he was bound by our agreement. As pregnant belly grew too big for me to even walk very well, it was larger than any I had seen, it still didn't occur to me to change it. As the expected date of delivery passed, I still hadn't changed it. It was my plan to feel my brothers ripened fruit pass through my loins, my brother finally pulling out of me after the first time I thrust my pussy accidentally on his cock.

It wasn't until I was fully dilated and the contractions were real close that I started screaming for pain killer. I got my wish. Not the painkiller, it was already too late. I got to feel his ripe fruit pass through my loins. Two healthy identical 8 pound 3 ounce baby girls changed my vagina from a tight young woman's into a mothers. The afterbirth hadn't been small either.

I was still recovering when school started. My full academic scholarship covered a dorm, but it did not usually cover rental apartments. My brother was efficient though, and had gone up for an athletic scholarship to the same school. That combined with my 4.0 GPA managed to get us an exception with a 2 bedroom apartment. My little girls knew my brother as their daddy even though their birth certificates did not. We told anyone that asked it was because he always was around like a father.

It was difficult for the first four years, while my brother was working on his bachelor's degree. There was no budget for daycare, so we had to manage our scheduled classes and studying very well. The conditions on having the apartment were that I had to keep a perfect grades. Somehow I managed, and my brother graduated with a Bachelors Degree. His educational living assistance stopped, and he got a job and took over the rent.

I not only got my bachelors degree, but my master's, and I'm well on my way to a doctorate. I take my brother inside of me very regularly. People think he is just a good brother, helping his sister with her kids. For a long while we were pretty good about birth control, but accidents happen, and as I now send my little nieces off to kindergarten, their baby bump cousin is kicking goodbye to them.