I grew up with two elder sisters who had no time for me, probably hated me, even. Our Mom was an alcoholic, and spent most of her time in bed. I can't remember why, but I always seemed to want to be tied up, from an early age. One time I sneaked my eldest sister's parka raincoat into my room, and got into it, zipped it up, and tied the hood so tight, it sort of scrunched down tighter and tighter, until there was just a small opening about an inch or a little more, over my mouth, otherwise my entire head was tightly sealed in the heavy rubberized material. You've seen these things, navy-blue fabric lined with yellow rubber. Anyway, I was masturbating lengthily, enjoying the sensations of tight confinement, when Jennifer burst into my room, looking for her parka, and found it! She slapped the shit out of me, although the hood protected me mainly, then Amanda came to see what all the fuss was about. I tried to untie the hood, but the nylon draw-cord had got knotted badly, and I couldn't undo it, which began to amuse the wicked sisters, as my plight sank in. In a fit of self-destructive attention to detail, I had passed the nylon cord through the zipper tag, and now it couldn't be unzipped either. They laughed a lot, made a fool out of me, then tied some cord round the sleeve cuffs, with my hands inside, and made it work like a strait-jacket, so I was trapped in that position, loosely but inescapably. Guess you'll just have to stay like that! they told me, suddenly realizing just how much power they held over me! They reminded me summer recess had just begun, and promised to feed me and water me now and again, if they remembered. Commenting on the size of my goodies, they seized and twisted my testicles until I was screaming, yanked on them, squeezed them, and laughed like drains as my erection got ever harder. They stuffed a pair of their panties into my mouth in case I woke Mother, and resumed their torture until I was bawling like a baby, but still rock-hard, strangely enough. They beat my backside almost raw, with a Ping-Pong paddle. and threatened me with locked confinement in the tornado shelter entered off the basement, and utterly soundproof, then proceeded to lead me down to the basement, and in to the shelter, locking me in, and disappearing for so long I thought I'd go mad! And still I stayed aroused! The rubber-lined parka got hot, and I streamed with sweat, and I lost all sense of time, in such complete sensory deprivation. I dozed off, and awoke to find myself being masturbated so efficiently that I knew it wasn't them! It turned out to be my two 'best friends' who had been let in to the secret by Jenny and Amanda, who fancied these guys, and used that power to get their cooperation, since my "friends" thought the girls were awesome anyway. Apparently some kind of 'deal' had been reached, if my so-called friends managed to amuse the girls with whatever tortures seemed appropriate, and which eventually settled down to endless masturbation without ever being allowed to come, and their cocks in my mouth, for long long spells, repeated over and over. So the summer passed, slowly and wickedly, with very little escape from the parka I'd been so keen to misappropriate, and then only when there were the four of them to make sure I couldn't fight it off. Ten years later, I got married to one of the best-friends of my sisters, who had been allowed to witness my humiliation, and was quite happy to carry on along the same lines, these last thirty five- odd years. My confinement has become more severe. and more constant, and my sisters still drop in from time to time to revel in my continuing captivity, and offer 'helpful' suggestions!