One evening I was downstairs and when my mom had dinner ready, she asked me to go up and get my sister, who is is years older than myself. She had her radio pretty loud, so when I knocked on the door she didn't hear me, so I just walked in. When I stepped inside, I saw her laying on her back naked, her knees were pulled up to her chest and her hands were between her legs. She told me to get out and close the door, and when I told her dinner was ready she just told me to get my ass out. It hurt me because we were pretty close, and when I sat down I told mom she would be down in a minute. When she came down she was in her loose sweats and slippers, and I could tell by her eyes that she was sorry she yelled at me. Dinner went by and my parents went upstairs, and when we were washing dishes I asked her what she was doing, she kept saying it was nothing. I kept bugging her and finally she sighed and said she was masturbating. I asked what that was and she told me she would show me later that night.
For the rest of the night I had butterflies in my tummy, wondering what she had been doing. I could barely even focus on my homework. Finally, a little past 10, she said our parents were asleep and to change into my bathrobe and come to her room. My heart was pounding as I stripped and put my robe on, and my hands were shaking when I walked in and locked the door. She sat next to me on the bed and started telling me what she was doing and why she was doing it. She said it was a way of making yourself feel good, but that it's something you do in private. She told me about my vagina, my clit and orgasms. We talked for about 10 minutes before she asked me if I was ready to try it for myself. I said I was, and she had me take off my robe. I stood in front of her naked and she laid me down on her bed. She then got her small vibrator out of her night stand, handed it to me and spread my legs apart. She told me to go slow, and to turn it on and start touching myself with it.
I touched it to my clit and squealed at how it felt. She just sat there watching me the whole time, giving me pointers. Pretty soon I told her I had to pee, and she said I didn't and to keep going. I kept holding it on my clit and a few seconds later my first orgasm hit me. I took a deep breath and twisted around on her bed, grunting and clenching my toes. I couldn't take it anymore and let go, dropping her vibrator and I curled into the fetal position. I actually cried because it felt so good. She laid down next to me and put her arm over me and said I just had my first orgasm. I hugged her and thanked her over and over again, still feeling warm and fuzzy all over. She then told me she needed to do it again, stripped off her sweats and grabbed the vibrator. I rolled over onto my belly and just watched her masturbate at her feet, learning better ways to do it.
We kept taking turns with it until about two am when we realized how late it was and that we had school the next day. I stood her up and hugged her and told her I loved her, and I probably held on for about five minutes. Finally I let go and walked back to my room, sleeping naked with my knees pulled up tight. The next day at school I was dead tired, but I didn't care because my sister showed me the most wonderful thing in the world.