For years I had kept a very private secret. I had run the gauntlet emotionally because of it too. Sometimes forcing myself to abstain, thinking it wrong, bizarre, even disgusting as many would see it. But eventually, I'd give in to the urge, usually resulting in a frenzy of activity in order to satisfy what I believed then to be an absurd form of sexual pleasure and gratification.
Looking back, I couldn't pinpoint the exact moment or reason why this particular fetish of mine as I came to understand it had even come about. I considered myself a normal teenage kid in every way, and enjoyed the simple exploratory pleasures that everyone did. But I had taken it one step further than that perhaps, which became for me an obsession, but one in which I could neither deny myself, nor wanted to, even though I tried over and over again without success to keep from doing it.
I didn't have a thing for my sister either, though she was certainly attractive and had the attention of several boyfriends who fell all over one another vying for her attention. But I discovered because of that, I did have a thing for her soiled panties, that for whatever reason inflamed my desire and need to masturbate myself with them until I came adding my own sticky discharge to the stains she had herself already placed there.
I had come home late from a date, frustrated as usual at the time, a little light petting permitted that did nothing more than arouse and excite me to the boiling point, where I stayed without any sort of release or pleasure to conclude that. Something I once again knew I would satisfy later in my own bed.
Stacy, my older sister by three years had just turned twenty-one and though still living at home while she attended a nearby university, had been given pretty much free-reign to come and go as she pleased, and to basically do whatever she pleased now as well, since mom and dad considered her an "adult", though still treating me like a small child in comparison the way I saw it.
Arriving home from my very frustrating date, I saw that one of Stacy's boyfriend's cars was parked out front of the house. As I walked by the side of the house towards the back door, which is the way I always entered the house, I glanced down through the basement windows, having to stoop over in order to do so. Sure enough, I could see the dim light in the den, though even at this angle I couldn't see much of anything else, but knew damn well that's where Stacy and her boyfriend where. Mom and dad having long since retired to bed as it was late even on a Saturday night for them. Obviously, Stacy had once again taken advantage of her new adult status, inviting her newest boyfriend over for some heated 'heavy-petting' as opposed to my barely getting a hand on a boob through the bra she was wearing kind of petting.
I slipped into the house as quietly as possible, and though my own bedroom was upstairs just down the hall from my parent's bedroom, I had no intention of going there, not at the moment anyway. Just as quietly, I then proceeded downstairs towards the den.
For a while now, my father had been remodeling the downstairs basement, specifically so my sister could have an even bigger bedroom than the one she had upstairs next to me, which was now a sitting room for my mother, though I never saw her 'sitting' in it. Another justifiable reason in my mind at least, to hold a bit of animosity towards my sister for that, amongst other things. As such, though the den itself was finished, the one wall separating the den from the laundry area remained framed, but still open. Making my way down the hall, I then entered into the unfinished still under construction portion of the laundry area, which was as usual, darkened with the only light coming from the one dim table lamp that was on. I carefully made my way over next to the furnace and water heater, crouching down between the two as they stood side by side, leaving me an unobstructed view of the couch directly across from me where my sister and her boyfriend sat, at the moment busily engaged in some of that very heavy petting I had as yet to enjoy for myself.
And sis had reasonably nice tits too, which were certainly interesting to see, but again, being my own sister, it wasn't her that I was interested in, not really. Bob, Brad, or Billy, whatever the hell his name was, sat completely naked on the couch, though his jeans remained wrapped around his ankles on the floor where they had just finished pushing them off to. Stacy still wore a pair of bright red panties, though nothing else, as Bob, Brad, Billy, or Butt-head sat fondling her tits, his rock-hard cock begging for attention, which for the moment, Stacy was obviously neglecting, enjoying the attention he was giving her tits with his mouth, along with the hand that now reached over, cupping my sister's groin as she sat there next to him.
It was seeing that which had aroused me beyond measure. Stacy's boyfriend, fingering her pussy through those red panties, knowing that she was 'juicing' them as he did so, pressing his fingers into her wet split, smearing her essence, her arousal into the crotch of them before finally teasing her enough that she finally slipped them off, tossing them off to one side.
I wasn't interested in watching them fuck, which they now began to do. And besides that, I wasn't too keen on getting caught watching them either, with Stacy's newfound adult status, I had no leverage on her whatsoever, so telling mom and dad that she had caught me spying on her while she and her boyfriend "messed around" as she called it, would have had me doing dishes for months.
I slowly backed out of the room, glancing off to one side as I did so at the pile of laundry waiting to be done, saw another, almost identical pair of my sister's panties to those she had just taken off, sitting on top of the pile, and hurriedly grabbed them on my way out of the room and then back upstairs to my own.
I made it safely back into my own room of course, closed and locked the door, then hurriedly stripped, jumping into bed holding my sister's panties in hand. I carefully examined the crotch, saw the telltale stain of her female secretions, and then placed her soiled panties over my cock and began to pleasure myself. I enjoyed the feel of the silk-like material as it caressed my prick. Another reason I enjoyed masturbating myself with them. But I also had the mental stimulus of soon adding my own spunk to that of my sister's, though again it wasn't the fact that it was my sister's fluids in the panties I held, but only that it was female cream that I was adding my own with. Again, not something anyone would certainly ever understand, accept, or approve of. It was a decadent, bizarre, weird desire of mine that I knew my parents would lock me up, and throw away the key, should they, or anyone else ever find out.