When I was 17 my little sister, who was twelve at the time, used to come into my bedroom and make a typical pest of herself. But I noticed one day she always stood there leaning against the bed post rubbing herself on it. The top of the bedpost was around 30 inches tall and consisted of a round wooden knob around two inches across at the top. she'd get up on her tip toes and press down on it. I could clearly see the knob disappear into the crotch of her pajamas. She would do this while engaging me in conversations related to sex, reproduction, romance, dating etc. At first I thought I was imagining things. then I realized she was actually doing what I thought she was. After a while she didn't even try to hide it. She would just hump my bed post. Then one day I just flat out asked if she wanted to trade beds. she jumped at the chance. So we made a project of it and a couple of hours later we had swapped beds and she had my old wood frame bed and I had her more modern bed that rested on a metal frame. Turned out I got the better deal as her headboard had been padded and my old one was solid wood.

So the next day she invites me into her bedroom for a conversation on the topic of orgasms and masturbation and sex toys and offers me the bed to sit on while she humped her newly acquired bed post. It seems just having her big wood dildo wasn't enough. She also wanted the intellectual stimulation of talking about sex while she did it.

The next weekend I went to the store and bought her a vibrator. It wasn't one of those shaped kind of like a penis. It was a huge vibrator with heat that had a head 2 inches across and several attachments for different sensations. It had a low, medium, high and extra violent speeds. The head also undulated and agitated wildly at the highest setting. She was so excited when I gave it to her that she threw her arms around me and hugged me and planted a kiss on my mouth that lingered about two seconds too long to be a normal sisterly kiss. She then opened it up and plugged it in and totally ignored the fact that I was still in the room when she pulled down her pajama bottoms, spread her legs and proceeded to hump the end of the vibrator on it's lowest setting. Her eyes rolled back and she moaned with pleasure as she gradually worked her way up from low to medium, high and finally that last hyperdrive setting that sent her way over the edge. I was scared the neighbors would call the police as she screamed. Finally she calmed down. Only then did she notice I was sitting on the edge of her bed. She smiled up at me not bothering to hide her dripping pussy as she still rubbed herself on the low setting biting her lower lip.

"Want me to suck your dick?" she as asked me. I was dumbfounded. I was not expecting that. I wasn't trying to seduce her. She was my baby sister and I just wanted her to be happy though admittedly I got turned on knowing I helped her have an orgasm. But a blow job was far more than I would have hoped for. She was my sister after all and I really never thought of her as a potential sex partner. As I said, I just wanted her to be happy and frankly it turned me on to make her happy. I was still sitting on her bed when she asked. I mumbled something incoherently that she interpreted as a yes. She shoved me back against her pillow and tore open my zipper, fished out my dick, squealed in delight when she held it in her tiny fingers for the first time and then took a couple of test licks before smiling and then inhaling my entire cock in one swallow. "How'd you learn how to do that?" She just smiled and sucked. About five deliciously excruciating minutes later I gushed sperm down her throat. She licked her lips and smiled and pronounced my cum delicious then sucked me clean and tucked me back in my pants and zipped me up and patted my crotch and declared that she absolutely must do that again. I was speechless.

After that I would periodically buy her a sex toy or something sexy to wear and she would suck my cock. Occasionally I talked her into letting me eat her out but she didn't seem to like that very often until one day I finally got her to admit that she thought she was smelly down there. I told her that was the normal smell of a normal and very sexy vagina and that most men liked it. After that I went down on her even more often than she blew me. Lucky for me I adore eating pussy and her's is the best tasting pussy it has been my privilege to eat out.

She gave me her virginity for my 18th birthday. What she didn't know was that she was my first as well. As much as she was an early bloomer I was a late bloomer. So the very first pussy my cock was in was amazingly tight. She didn't even wince when I ripped her hymen. I asked how bad it hurt and she said that fucking felt so good that she didn't even notice the pain from her bleeding hymen. Then it was my turn to clean her which I did by licking her. I didn't even mind the taste of my cum or her blood.

My sister and I have fucked regularly for years now.