How I seduced my sis. Incest Sex Story


 In the late seventies my mom and dad split. My dad had found himself a young woman and ran off with her, leaving me, my mom and my sister to fend for ourselves. It took Mom 6 months to find him and another six months to get a divorce. My dad was a CEO of an international company so with the divorce settlement and child support we had enough money to live comfortably.

Mom had started suffering migraine headaches during the divorce process. The doctors told her it was psychosomatic but it didn’t help moms headaches. Sometimes she would be awake all night with a headache. The doctors finally prescribed a sedative that was guaranteed to let her get some rest.

The first time mom took a pill for one of her headaches she sleep the entire night. She woke the next morning rested with no memory of suffering from a headache. From then on when she felt a headache coming on she would take a pill and wake the next morning rested.

I didn’t realize the total effect of the pills until one evening when my aunt called. Mom had taken a pill and gone to bed an hour and a half earlier. Aunt Carol called and wanted to talk to mom. I told her mom had already gone to bed but Carol insisted I wake mom so she could talk to her. I told my aunt I’d wake mom and have her call Carol back.

I went up to moms room and knocked. When there was no answer I opened the door and found mom sound asleep. Normally I wouldn’t have bothered her, but Carol had been insistent. I walked over and gently shook moms shoulder calling her name. She didn’t respond. I shook her harder. She still didn’t respond. I shook her even harder and was almost yelling her name.

Finally moms eyes fluttered open and she said,”Wha….what?”

“Carol wants to talk to you.” I told mom.

I picked up the bedside phone and said to Carol,”Here’s mom.” and handed it to mom. She fumbled with the receiver and I had to help her get it to her ear.

I could hear Carols voice as she spoke to mom. Mom was responding with,”Uh, hu. Yea. Uh, uh. Ok.”

Finally after a few minutes mom mumbled,”Goodbye,” dropped the phone in the cradle and flopped back on the bed.

I pulled the blankets over her and left.

The next morning as we were eating breakfast I asked Mom,”What did aunt Carol want last night?”

“Aunt Carol? I don’t know. I haven’t spoke to her for a week.”

“Mom you talked to her last night, don’t you remember? I woke you to talk to her on the phone.”

.

“No I don’t remember. I took one of those pills. I must have been out of it.” She replied.

I started to wonder about her actions while under the influence of the pill. Before I left for school I copied the name of moms sedative so I could look it up later. That afternoon on my way home I swung by the library. I knew they had a copy of the Pharmacists Drug handbook. I found the book and after a bit of browsing found the page with the drug I was looking for:

The side effects of Rohypnol

“The effects of Rohypnol use may be felt within 15 to 20 minutes of administration and may last for over 12 hours. Symptoms associated with use of Rohypnol include drowsiness, lowered blood pressure, muscle relaxation, dizziness, slurred speech, poor reaction time, confusion and memory impairment. One side effect associated with Rohypnol use is retroactive amnesia, where the person who takes the drug can’t remember events that occurred while under the influence of the drug. Although Rohypnol is a depressant, it may produce excitability, talkativeness, or hyper sexual behavior.”

The term “retroactive amnesia” hit me and I reread that passage. That sounded exactly like what had happened with my mom. I put the book away and walked home thinking about the implications. The term “hyper sexual behavior” kept buzzing in my head.

Mom didn’t use another pill for close to a week, but Tuesday the next week she had another headache. She took a pill at 7:00 and went to bed. My sister Jean was off with her boyfriend and I knew she wouldn’t be home until at least midnight. I waited until 9:00 then figured I would try an experiment with mom.

I went up to her room and walked in. My throat was dry and my hands were shaking. Mom was sleeping on her back. I pulled the covers back and shook her to wake her.

It took a long time before she mumbled,”Wha…what’s going on?”

I took a deep breath. I knew if this backfired, if mom remembered any of it I was going to be in deep trouble. But I also knew this was the only way I was going to find out whether she had the side effects of the pill.

“Mom,” I said putting my hand on her knee,”How do you feel?”

“I feel fine.” She said in a slurred voice, her eyes still closed.

“You….aw..don’t feel horny?” I asked and held my breath.

She was silent for a few moments then said in that slurred voice,”Yes….I am.”

I had to make certain she was out of it and that she wouldn’t remember anything of what

happened.

I took a breath and said,”Mom, do you want to fuck?”

She was silent for several seconds and just hen I thought I was going to be toast she said,”Yes. I want to….yes.”

I didn’t really want to fuck her, I just wanted to know if she would and it sounded like she was all ready to do it. I got up and left with the thought that the next morning would be the real test.

The next morning I was very nervous. I had no idea whether mom would remember anything about the evening before. When she finally got out of bed I sat waiting for the ax to fall. But all she said was “good morning” as she walked to the coffee pot and got a cup of coffee. As the minutes passed I began to understand I was safe. But also the possibilities began to run though my head. I thought if when mom takes a pill she doesn’t remember anything, what if I give Jean one? Could I fuck her?

Like I said my little sister was a fox and I knew if I could get her to take one of the pills I’d fuck her until I couldn’t get it up again. My sister was a year younger then me and really hot. She was short, 5′ tall and weighed about 85 lbs. She had red hair, and a set of nice B cup tits. She was part of the gymnastics team so she had a very well toned body with a pair of killer legs.

I knew my sister was on the pill. I had snuck into her room a few months before intent on

checking out what kind of underwear she had (and maybe use one to jack off with) and found her diary buried under her panties.

I knew she was going to be gone for the rest of the day so I took it back to my room and read it. The first 3/4 of it was pretty boring. She had started it in middle school so it was all about this boy looked at me and this boy held my hand. When I got to the last few pages though it got very interesting. She detailed how she and her boyfriend had been having sex and how she had gone to family planning to get on the pill so she wouldn’t get pregnant. Since she was on the pill I knew if I could get her to take one of mom’s pill I could fuck her without worrying about getting her pregnant.

Every night for the next few days I fantasied and jacked off two or three times a night thinking about Jean taking a pill. I was hoping something would come up. My first plan was to wait until mom took a pill the same time Jean was home. I decided to steal a couple of the pills so that if things came together I’d be ready.

Thursday Mom told me and my sister she was going to visit aunt Carol that weekend and

wouldn’t be back until Sunday. She asked if we wanted to go. Neither Jean nor I really wanted to so mom said we could stay at home. That night I hoped mom would take another pill so I could go in and take a couple from her bottle, but she didn’t have a headache.

The next morning I waited until mom was making breakfast, then I slipped into her room and found her bottle of pills. Luckily she had just refilled it so it was full. I took out two, went back to my room and hid the pills. I stretched out on my bed and thought about the coming weekend. All day the only thing I could think about was what it was going to feel like to slide my hard cock into my sister’s tight pussy. When I got home mom was just putting her suitcase into the car.

“Your sister said she was going to the movies and wouldn’t be home until late so you’re on your own this evening. I left some money on the counter so you can order pizza. I’ll be home noon Sunday.”

Mom gave me a hug, jumped into the car and left. I went into the house and began to think of how I was going to get Jean to take the pill. After a few minutes I hit on a plan. I knew she loved Root beer floats. I ran to the store and got some ice cream and root beer. I crushed up one of the pills really fine so I could mix in with the float and hid it in one of the cupboards, then to keep occupied I went in to watch TV while I waited.

It seemed like forever before Jean got home at 1:00 AM.

“Hey you’re getting in late.” I said.

“Cal and I were out at the lake.” She said with a grin.

“Doing what? Bumping belly buttons?” I asked.

“Wouldn’t you like to know perv!” She shot back.

“I could care less.” I said,”But from now on you need to let me know where you are incase mom calls and wants to know.”

“I hate that she puts you in charge!” Jean huffed,”I don’t think I should have to check in with you!”

“I didn’t say you had to, all I want you to do is tell me where you are incase mom asks. I don’t care if you’re fucking your boyfriend and all his friends.” I replied trying get her riled.

I was very surprised when she yelled,”How do you know? Who told you?”

“Know what?” I almost asked, but choked it back when I realized what she had just admitted to.

“I’m not telling who told me, but I heard all about it.” I said trying to hold a straight face as I bluffed her.

“Those…those…bastards!” She yelled,”They promised not to tell anyone! I only did it once!”

I realized I had just been given a nice piece of leverage. If I used it right I might not have to get her to take the pills. I might be able to fuck her while she was awake, which would be a whole lot more fun.

“Yea, from what I heard you loved taking multiple cocks!” I replied with a grin.

I…I…I…” She stammered, then stopped and stood staring at me.

“So when did you?” I asked.

“I’m not going to tell you about it you perv!” She shouted.

“Ok fine. I’ll just let mom know about your little sexcapades.”I replied as I turned to leave.

“She won’t believe you!”Jean screamed.

“After I tell her you’re on the pill, she will.” I said smugly.

Jean’s mouth dropped open, then she gasped, “How do you know that?”

“I know a lot.” I lied,”So you have a choice, tell me what I want to know, or I tell mom what I already know and that’s enough to get your little ass in big trouble.”

Jean’s shoulders slumped as she said,”Ok, Ok. I’ll tell you.”

“Great. I’ve heard the other side, now I want to hear your’s. Before you start how about I make you and me a root beer float to make it a little less bitter for you?”

Jean perked up a little at the mention of a root beer float.

“Ok. I’m going to change and I’ll meet you in the livingroom.” She said in a resigned voice.....