Full sibling sex

This hopefully will take you through the experience of how experimenting went to fooling around, to basically, all the way.

As I was a year older, I was also the first to start to mature. The day I actually experienced an orgasm while pulling myself off was life changing. I now had a new hobby. Unfortunately, I was living in the early eighties, so I didn't have the internet for visual stimulus. I had the television (when it was being kind), which was usually void of nudity. I had magazines, but nothing pornographic, and then the occasional lingerie catalogue would grace our mailbox. Basically, I was desperate for anything visual to wank myself to.

The twins next door were a year older and would be in bikinis often in summer, so peeking out of a window, I would punish my shaft while watching them in their backyard.

We also had a pool and my sister would have her girlfriend's around for a swim, so I would have much to look at in our own backyard at times.

My sister was the first person to ever watch me wanking. She seemed fascinated by the fact that i could ejaculate. I at least had a willing audience member.

Things slowly progressing led her to playing with her brothers big dick. Helping me shoot my load was now a shared game that we both enjoyed in secret.
Soon, I had this taking place with both of us completely naked.

She was also beginning to develop and her nipples were first. I was still enjoying her hands, but was licking and sucking her little titties while she jerked me off. She much preferred to watch me do myself, so I would encourage her to touch herself. Eventually, she began to get into playing with her pussy, and would moan and whimper at times. She would also get wet, from touching herself.

We had been progressing like this slowly for several months, and without exaggeration, it would be over a hundred times. I usually finished on her pussy.

Soon she began having menstrual cycles and her body changes were happening. This added excitement to the situation as we both knew how to reproduce in theory. Fortunately, my sister had an irregular period cycle, so my mother got her on the pill to stabilise them. This was a game changer.

For months I was using just the tip, but inserted just inside my sisters body. I would even cum in this position, never inserting more than the tip.

One day, I had discovered that she had actually already been having full penetrative unprotected sex with her boyfriend, and he always came inside her. This was too exciting for me, and I wanted to do the same to her. I was a little annoyed that she had been keeping this from me.

As I never did anything without her permission, I wanted the ok from her to actually fully insert myself inside her young pussy. I had to talk with her before we fooled around next.

One afternoon after school, I found her in our pool having a swim. She was in a two piece bikini and was really looking beautiful. She practically had her choice of boys at school, as she received plenty of attention because of her looks. A slim figure, pretty face, blonde hair, and some newly developed female parts, made her very appealing.

I had a swim too and started splashing around playfully with her, just innocent stuff, then we both hopped out of the pool and she layed on her towel, on a deckchair.

Now, with nobody around, I decided it was the perfect time to chat. I told her that I knew what she had been doing and began asking all kinds of details. I wanted to know everything. All the intimate details that no brother should ever be asking his sister. I had to know all.

Thankfully, she was willing to answer and share her experiences openly. Hearing all this was turning me on, and she soon spotted my erection in my swimmers.
It was easy to see, I was fortunate enough to be above average down below.

Once she saw what the conversation was doing to me, she changed on me. She basically told me, that just because she does it with her boyfriend, we weren't going to do anything more than we already had in the past.

I wasn't really expecting that response, so I wanted to know why. She said that it's because I was her brother and we shouldn't even be doing anything because it isn't normal for a brother and sister to do what we do.

This was also a response that I wasn't expecting, because I knew that we both enjoyed giving each other pleasure, and the fact that it was wrong only made it more exciting for us both. Although we were never caught, we had several close calls, where we were almost caught. We were both great at covering up our activities.

I knew there was something more. There was more to why my sister was still keen on fooling around, but not with full penetration. I kept on talking as it was all I had. I knew that the fact that I was her brother wasn't the real reason that she wasn't willing to take me completely inside her. There was something that she was not telling me.

I was really very sexually charged and so horny at this point, so I just set my boner free, and began stroking it while talking. This was what helped her come out with the real reason why she didn't want to go all the way with me, while she was willing to with her boyfriend.

She said, almost automatically, that if we had the same size dicks, then she would actually want to, but he is much smaller. She began to explain that if she let me go all the way inside her, then I would stretch her pussy and he would know the next time they had sex, because she would be loose, and they were doing it practically daily.

I laughed. Then I laughed some more. She was getting angry because it was a mocking laugh, and I was doing it deliberately. She demanded to know what was so funny, so I reminded her that babies come out of there and it all goes back to normal afterwards. I said it's because it's made of stuff that can stretch, but then go back to normal afterwards.

I said he will never know that she's had sex with someone who is bigger, because she will be normal again. Despite my fantastic explanation, she still wasn't willing. What else was there I thought. I kept asking why.

Then eventually she said, that she was actually worried that it would hurt and she wouldn't enjoy it if it was painful. She said she's even scared of taking all of my dick. I assured her that I would stop if it hurt at all.

She smiled and as she got up from the deckchair, said no again, firmly. The smiled as she walked inside.

I had put up with enough, and also went inside. She headed for the toilet and closed the door, and I went into my room to play with myself on my bed. A minute or so later, I heard the toilet flushing and she emerged. She looked into my room as she turned to walk to her room and stared singing Michael Jackson's Beat it chorus as she walked away.

Laying on her bed, our doors faced each other, so we could both see each other clearly with our doors open. She was mimicking my stroking and still singing Beat it in a mocking fashion. She knows to leave me alone unless she wants to be part of my masturbatory sessions, but she wasn't.

I began to only catch on that she was actually horny after seeing her putting her hand down the front of her bikini bottoms to rub herself. I partly expected that this was part of a tease, so I just continued to wank.

Then she got up and came right to my door, telling me I should feel how wet she was. Then she ran off giggling, fully expecting me to give chase. I took the bait and caught her fast. I pushed her down when I did and she ended up on a single seater couch and I immediately got between her legs with my hips.

My throbbing erection was now pointed towards her bikini clad pussy as I was stroking it. One hand went to her hips where I located the knot that kept them secured to her body. With a sharp tugging motion, they were no longer secure on one side of her hips and now my fingers were trying out that wetness she was just bragging about.

At the same time I was moving my cock to her pussy lips and was trying to get that wetness spread onto my knob. Out of nowhere, she shoved me away enough to bolt to our parents bedroom, which was the closest room.

Throwing herself on her back on the bed, she grabbed the large stuffed toy tiger that our mother had as decoration, pulling it between her legs on top of her. She had it in missionary position. She instantly began humping it and talking very dirty.

As this was happening, I got into position below her,placing my cock between the tiger and her pussy. She was acting like I wasn't there and she was just having fun with the tiger.

I was there though. I was right there and she was not stopping her humping while talking filthy. I hardly had to do anything, and the tip of my cock began to slowly penetrate her pussy. In fact I was trying hard to not do anything as I felt I was already on the edge of orgasm. What I did do, was slowly move on top of her as I was going deeper and deeper inside her tight little wet pussy.

Next, one of us ejected the tiger from between us as it was getting in the way of us having sex. I now was trying so hard to hold back from exploding nut first deep inside my biological sister's horny wet cunt. I knew that at this rate I would be balls deep with no more shaft to give In moments. I also knew how hard I was resisting my orgasm.

Then I felt our pubic bones meeting and I knew that I had finally made it. At one last attempt at holding my orgasm back, I pushed deeply inside her and froze. I grabbed her hand and encouraged her to feel how deep I was in her. She managed to touch the base of my cock, then said, just hurry up. She then went back to fucking and thankfully my orgasm had been pushed back from the pause, so I began fucking her hard. I came deep inside her and it was amazing.

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