From when I was 7 years old, and my sister was not yet 6, we were always exploring each other's bodies. My earliest memory is me and my friend Frank from across the road getting my sister naked in our kids cubbie-house. Basically it was version of doctors and nurses, and my friend and I were the doctors, my sister the very willing patient. For maybe 20 minutes, we had her naked, on her hands and knees with her ass sticking up in the air while we stuck our fingers up her butt, and later we put other objects in her too.

Later in life, and up until I was 15 years old, we were always exploring each other's bodies but almost every time it was at my sister's instigation. I lost count of the number of times that I'd hear a subtle knock at the bathroom door while I was in the bath, and it would be my sister wanting to come in and to play with my cock. I always loved these times because I'd get to lie back while she wanked my stiffy. And she was just as thrilled to have my cock to wank. After the first dozen or so times, things progressed to me asking her to suck it for me, and after yet another dozen bathroom wank-times, she did start to suck my cock which even though I was too young to blow a wad, it always felt great having my cock in her greedy mouth. Unfortunately I was never allowed into her bathroom times to play with her body - all this sex play as at her initiation.

Our mother worked at a large hospital, which included very large grounds and gardens. On school holidays, my sister and I would often go to her work so that we could swim in the pool all day. We were older at this stage, our parents having divorced when I was 11 years old. When we walked around the grounds and bush area, my sister and I stumbled upon a patient in the bushes who was wanking himself. This by itself was no big deal, and we left the guy to his fun.

But it seemed to flick a switch on within my sister, and when we were in the pool a short while later, we would take turns diving between each other's legs and while we each did so we would spend as much time as holding our  breaths allowed to rub each other's crutches. She'd slide her hand up the leg of my shorts to squeeze my hard cock, and I'd rub my fingertips along her cunt entrance pushing her bikini pants into her cunt. We must have done it to each other more than a hundred times, and it was great. Then later when in the deep end and about to climb out of the pool via the steps, against my sisters protest I got my hand inside her bra top and played with her tits for several minutes. All the while she was protesting, but more about the chance of being seen than by the fact I was grabbing a handful of her tits. My response was to tell her to stay under the water, and that our bodies concealed what we were doing. Even though she continued mild protests, in fact she let me do what I wanted for maybe 5 minutes before we did finally get out of the pool.

When it was just my sister and I in the home alone, she was never fully dressed. Always at most only wearing bra and panties, she would make quite a display of say ironing her clothes in the lounge room where I could stare at her almost naked the whole time. I was never allowed to touch her at these times - her game was always to tease me with her near-naked view.

On one occasion, our youngest sister was also at home, and the 3 of us sat on the same sofa watching TV. And while the youngest sister continued watching TV, my sexy sister on the other side started to tease and tickle me. Each time this would result in a wrestling match and with me being stronger I'd always win the tussle. On the last occasion of wrestling, I worked my hand into her bra and grabbed a handful of her tit, which she allowed me to do by not resisting that hand at all. After 2-3 minutes of me feeling up her tit and pinching her nipple, she playfully bit me to end that wrestle, and back to 3 kids on the sofa we went.

I then had my arms crossed, and with my left hand under my right arm, I carefully started to pull her blouse out of her skirt which she made no move to resist. After gaining access under her blouse, I carefully snuck my hand up to the level of her bra, and I pushed it off and up over her tits, again she made no move to stop my wandering hand and she let me have free access to her left tit and nipple. When I had my target in my hand, I then worked her nipples for a few minutes, gently pinching and pulling on it. I could hear her breathing was slightly labored as my nipple play was getting to her and the whole time she let me do what I wanted to her.

thinking to try my luck at how far I could go, I then slowly moved my hand down her stomach very carefully because our younger sister was still sitting unaware to my left the whole time. When I got to the waistline of her skirt, my fingers searched for the top button and I popped it open - my hand always concealed by being inside my sister's blouse. After getting the button undone, the zipper at the front of her skirt was easy to deal with and finally my hand was inside the top of her panties. At about this time my sister un-crossed her legs and opened them a little to give me better access to her cunt. The first thing that surprised me was that even at 13 years old, my sister had a very hairy snatch. The second thing I noticed was just how wet she was, she was dripping.

Anyway, with my fingers sliding up and down the outside of her cunt, her wetness making it so easy to slide in and around her clit, my sister made the most subtle moves to pump up and down on my fingers - we both being super horny but also intensely aware that our younger sister was just sitting inches from my other side.

And then I can't explain it - I guess I got a serious case of the nerves, because my whole body started to shake like I was freezing cold. I certainly wasn't cold, but my shaking got so strong that I had to stop fingering my sister's soaking wet cunt and leave the room. When in the kitchen, I called for my sister, but she knew where this would end up going, and she refused to come into see me.

Our mother was a total slut. After our father moved out, mom went cock crazy and was fucking different guys all the time. My room was the closest, and with paper-thin walls I got to hear every gasp, groan and breath when mom was fucking some new guy. 
Sometimes these occasions would get me so horny that I'd sneak into my sister's room for a bit of fun and games, but she'd yelled out in no uncertain terms that I was not welcome. In all the hundreds of times my sister and I had sex fun, it was always when she wanted it and she that made the first move. Not that I am complaining, but it would have been cool to have access to her body when I wanted to start it.
