I have been working on the one for some time now and have divided the story into chapters. All participants are over eighteen years of age.
Chapter 1 -- The Apartment
I was starting my next to last year of high school (grade 12 here in Ontario) and was incredibly excited about it. I had just turned 19 on September 2 and had an two years of football eligibility left - I had missed the August 31 age limit cut off. I had had a great year last season on the gridiron and this season promised to be even better. I was a big kid -- the two inches I had grown this summer put me at 6'4" and my constant working out had filled out my 235 pound frame into a muscular one. Although shy, I was proud of my physique. And my new cock. Without a word of a lie, it was now well over 11" and it never ceased to amaze me just how long and thick it got when it set it's mind to it. Although still a virgin, I had fantasies about a blossoming sex life yet to come in my new apartment. The testosterone was definitely flowing.
My parents had allowed me to set up my own studio apartment in the basement as an 18th birthday gift and it was just finished last spring. A separate side door entrance allowed me to come and go pretty much as I pleased. As long as I checked in with them on a regular basis and ate supper with them upstairs periodically, they left me to my own devices. The best feature of the apartment was the expensive corner steam shower unit I had convinced them I needed. With a four foot radius, the curved sliding door gave me plenty of room for a partner to join me. Not what my parents had envisioned I'm sure, but one that I lived in hope of fulfilling.
As a studio apartment, it was really just one large room with only the toilet and sink behind a closed door. The king-sized bed shared the space with both the shower, kitchenette and the stairs descending from the side door landing. A table and chairs served for both eating and studying and a loveseat rounded out the furnishings. A chest of drawers and a dresser substituted for closets. I had also scored a heavy duty second hand massage table that I left set up under the stairs, easy enough to pull out when needed. I was a big guy but the apartment was roomy.
It was apparent early on that the living space offered no privacy for changing. This was, of course, only a problem when I had guests over, but I remained optimistic. A last minute addition had been a bi-fold, three panel screen on wheels that I had found at a second hand store. The three panels consisted of fully framed two-way mirrors that were reflective from the one side and transparent from the other. It was a sturdy setup and could be wheeled out of the corner into place easily and stood at just under five feet in height and six feet wide. It was meant to offer a modicum of modesty in an apartment with no walls.
With three panels and it's five foot height, it did a poor job of actually screening me when I needed to change. The panels could be angled to allow a two or three-sided reflection, but any background light made them transparent from the reverse side. I hadn't realized it when I purchased it, but the bright light above the dresser served the purpose admirably. With it on, I might as well have been disrobing in front of a pane of glass for anyone watching from the room.
I was developing into an exhibitionist before I knew what an exhibitionist was. In three years of school, I had grown from 5'9" and 145 lbs. to 6'4" and 235 (Canada hadn't gone metric yet). Everything seemed to be growing along with my physique : my football prowess, my self admiration, my burgeoning fantasy life and my cock. I was so proud of myself that I imagined that everyone else felt the same way too.
We lived close to the school so my parents got used to seeing my football teammates and our friends coming and going during the season. They reasonably set "visiting hours" from 8 AM to 9 PM during the season which was meant to ensure that I got to bed at a reasonable time. Our coach was adamant that we avoid having girlfriends during the season as they were a source of distraction and sapped our strength. Although we all grumbled about it, I was secretly relieved because I was really too shy to court. I was a virgin and was desperate to hide the fact.
Chapter 2 -- The Audience
I first realized that I had acquired an audience at the apartment the Saturday morning before school started. Labour Day weekend. There was a small sliding window above the sink in the apartment which was always open during warm weather. It was the only source of natural light in the kitchen and offered an unobstructed view of the entire apartment interior from our backyard.
As I was preparing for a shower that morning, I noticed a shadow cross the angled light pattern on the floor. I heard the faintest hint of whispering coming from that direction. I had the presence of mind to avoid looking up as it dawned on me immediately that someone was peeping on me. I had no idea who it might be, but I found it incredibly exciting that someone wanted to spy on me. Any modesty I might have felt melted away -- I wasn't going to miss this opportunity to expose myself, here in my apartment.
My cock was already stiffening -- within moments of realizing I was being watched it had sprung to life. I slowed everything down as I wanted to savour every minute. I turned to present a side-on profile as I opened the shower door and turned on the water, knowing that my growing erection would best be appreciated from this angle. I took my time testing the water temperature before stepping into the shower, stroking my cock to it's fully erect state as I did so. As I slid the glass door closed, I realized that the clear glass panels were steaming up and that the view from the window would be obscured.
With no idea of who it might be peeping, I fantasied that it was Marjorie -- the head cheerleader who was often the object of my masturbatory dreams. She was a knockout (a blonde bombshell) and had a "reputation". She was the acknowledged Alpha of the mean girls at school and had been flirting with me at a Spirit Rally the previous weekend. My shyness in public prevented me from taking things any further at that moment, but in the comfortable confines of my own apartment here and now, there were no lack of self confidence. Whoever it was that was peeping, they were hoping to see me naked and I was not going to disappoint - a surge of wanton abandon overtook me.
This was the first time that I had been aware of being spied on and it was an incredible turn on. I couldn't help but to soap up my right hand and have at it, beating my meat furiously, knowing that whoever was peeping was unlikely to have counted on catching me putting on a performance for them. I used a washcloth in my left hand to wipe down the glass panel closest to my audience as my right hand worked it's magic. I was used to a more leisurely pace to my masturbation, but my frenetic speed here resulting in a spattering of my cum all over the glass panel closest to the window within moments.
I had to catch myself to prevent from collapsing, winded by the intensity of my orgasm. Slowly recovering, I used the handheld nozzle to clean up my mess, my erection slow to diminish. As I exited the shower and towelled myself dry, I took a furtive glance at the window. Whoever it was, they were no longer there, so I was left to wonder who it might have been. Marjorie was just a wild presumption, wishful thinking on my part. Truth was, it could have been anybody. I also realized that by wiping down the glass panel while beating my meat, I had given away the fact that I knew someone was spying on me.
Some of the senior ladies at school had become quite taken with my physique, finding excuses to touch and caress my muscular arms or chest whenever they got the chance. Crowded hallways at school gave them the opportunity to pinch my butt and my newly acquired endowment was whispered about quite openly. Many of the newly minted adult women at school were bragging to each other that they had witnessed my 11" manhood personally, but none of it was true. I was a closet virgin and hadn't had an intimate girlfriend let alone a hand job.