I Knocked Up My Sister Too

Fbailey story number 341


I Knocked Up My Sister Too


As I lay there after midnight in bed with my mother after we had sex I hugged her closely and said, “Mom I need to tell you something. Please don’t get mad. I knocked up Lisa too.”

Mom went right into shock. She didn’t say a thing for almost a full minute and I couldn’t hear her breathe either.

Finally in a low voice mom asked, “When and how?”

We were in the spoon position that we both liked so well after sex. I held onto her lower breast and snuggled my cock into the crack of her ass. I said, “Well you know how it is having my birthday fall on Christmas. When you offered me sex for my sixteenth birthday present it was fantastic. Well Lisa offered me sex too. You always make me wait until after you are sure that Lisa is asleep. Well Lisa doesn’t make me wait. I can have her any time that I can catch her. You were so worried about missing your period two months ago that you didn’t notice that Lisa had missed hers too. Then you bought those pregnancy testers and I had Lisa pee on the other one. They were both positive.”

I let that sink in for a moment and then I continued, “Lisa is worried about you hating her and the girls in school finding out that she is pregnant. She is starting to get fat, her bras don’t fit anymore, and she is afraid of you.”

Mom asked, “Does she know that you sleep with me and that you got me pregnant too?”

I replied, “No Mom. I promised you that I wouldn’t tell anyone.”

Mom asked, “Did you make Lisa that same promise?”

I replied, “Yes, but I told Lisa that I would tell you when I found the right time. So she knows that I’m going too.”

Conveniently the next day was Saturday and no one had anyplace to be. It was mid April and Mom and Lisa were now three months pregnant and just starting to develop round bellies.

Lisa and I were sitting at the kitchen table eating some hot cereal when Mom walked in wearing just a bra that was a size or two too small and a pair of panties. Mom turned sideways, ran her hands over her smooth rounded belly, and then said, “I hear that you are pregnant too. Show me.”

Lisa looked at me, then stood up and removed her robe. Lisa also had on a bra that was too tight and a pair of panties. Lisa stood sideways and ran her hands over her rounded belly too.

After a moment of silence Mom started to laugh then she said, “So your horny brother knocked us both up, huh.”

Lisa looked at Mom, then she looked at me, and then she said, “You screwed Mom too?”

Mom stepped in and said, “Slow down Lisa. I didn’t know about you either until after midnight this morning. It seems that we both offered him our bodies for his sixteenth birthday, it seems that we both enjoyed ourselves a little too much, and now it seems that we have a little problem to live with…or more precisely two little problems to live with.”

Lisa looked at Mom and said, “You’re not mad at me then?”

Mom patted her belly and smiled as she said, “How could I be.”

Mom started to make coffee but said, “I guess we should start watching what we eat, for the babies sakes.”

Lisa said, “It looks like we both need some new bras.”

Mom laughed and said, “Well lets go get some this morning. How about we get a couple of those crazy T-shirts that say Baby On Board too.”

Lisa asked, “Should we advertise it? That we are pregnant I mean.”

Mom said, “Why not? It isn’t as if we can keep it a secret much longer. We don’t have to tell them that your brother is the father of both our children.” Then there was a pause followed by, “We need to make a double appointment with my doctor too.” Then she looked me right in the eyes and said, “I think that you should go with us too.”

Lisa said, “Yeah. If we have to do it so do you.”

Mom said, “We also need to tell the doctor the truth. There could be problems with children of incest.”

After breakfast we got dressed and I had to go bra shopping with the girls. Mom made it just as embarrassing as she could too. She held each one up for me to approve of, she made me go in the changing room with them, and then she made me take them to the cashier and pay for them myself. As if that wasn’t bad enough we went to a maternity shop to look at baby stuff. Mom made sure to tell the woman that they were both pregnant. Then they bought matching ‘I’m Pregnant’ T-shirts and wore them out over their new bras.

As if that wasn’t bad enough Lisa ran into three of the girls in her class. They noticed the T-shirt and all hell cut loose. Mom handled it every well and told the other girls that she was pregnant too and that if they knew what was good for them that they would get on some form of birth control and make the boy wear a condom too.

Lisa told the other girls that it had been an accident but that even older women get caught off guard too. When the girls asked who the father was Lisa said, “No one that you would know. He isn’t from around here.”

After Mom thought that I had been embarrassed enough, she and Lisa put their coats back on and we left the shopping mall. On the way home Mom told me that what I had gone through back there was nothing compared to what Lisa would be going through at school. She said that those three girls would tell the entire school about Lisa being pregnant before Monday morning. That was when reality hit me.

I knocked up my sister too.

I had gotten both of the women that I loved pregnant at about the same time. I realized that they couldn’t hide the fact that they were pregnant but that I could hide the fact that I was the father. I told Mom that I wanted to tell everyone that I was responsible and take some of the blame off them. She said that if I did, that we would all be in serious trouble with the police. Incest is frowned upon. She told me to keep my mouth shut and to let her and Lisa deal with it.

At home the girls relaxed and turned me into their slave. I got drinks, I got snacks, and I got to answer the phone. It was ringing off the hook. Every girl that Lisa knew was calling her to confirm the rumor that they had heard. Lisa told them all the same story, that she and her mother were both three months pregnant, that they were keeping the babies, and that they wouldn’t know the fathers even if she told them who they were.

Then Lisa got a serious phone call from a girl that she just barely knew. She had heard that Lisa had been walking around the mall wearing a T-shirt telling everyone that she was pregnant. Then she asked Lisa if she could come over, she needed someone to talk too. Sure she could.

In about an hour a girl knocked on the door that I had seen a few times in school. She was cute and I had admired her. She introduced herself as Katie and said that Lisa was expecting her. I let her in and took her to the living room where Mom and Lisa had their feet up on the coffee table. Their shoes were off and they were still wearing their matching T-shirts.

Katie looked around nervously and Mom sent me to the store to get her some Rocky Road ice cream. I knew there was some in the freezer because we had just bought it on the way home. I also knew that Mom was telling me to get lost so I put on my coat and left. I figured that I had better come back with the ice cream so I really did go to the store.

While I was gone Katie opened up to Mom and Lisa that she was pregnant, but that she couldn’t tell anyone because the father was her brother.