Feeling bolder one day, I took the next step, or rather the next several steps down to the second floor, where I lay down on the landing right outside my downstairs neighbor's back door. I took extra care to be as quiet as possible and, trembling, I spread my legs wide and went to work. I felt incredibly dirty knowing that my neighbor could at any time open his door and find me impaling myself on a huge dildo, but thankfully the door remained closed and I crept back up the stairs a very satisfied customer. And, of course, this became my new routine.
In the interest of shortening the story, since there is quite a bit more to tell, let me just say that over the next few weeks, I worked my way down the back stairway to the point where I was masturbating every day in the basement laundry room totally naked with my clothes in my apartment four floors above. Everyday after class, I would undress and steal naked down the back stairs to enjoy myself either on the laundry room floor or on top of the washing machines (which I highly recommend during the spin cycle), then quietly return to my bedroom.
This was quite a bit more daring than what I had been doing up until this point since the laundry room was used by everyone in the building, while my stairway was used only by those in the south wing. Luckily for me, an open doorway to the laundry connected to a small utility room and on a couple of occasions I had to hide just inside while some unseen tenant checked his or her laundry. This only heightened the thrill, of course. This became my new routine and one that I remained satisfied with for several weeks. Although the laundry room was more frequently used than the back stairs, I felt safer there knowing I could hide in the utility room in a pinch. But variety is the spice of life and I soon found that I wanted to spice things up a bit.
One day after returning from my classes, I began my ritual as before: I went to my bedroom, undressed myself, and grabbed the dildo from my nightstand, but on this day I had decided to try something a little different. Rather than going to the back door, I instead went to the front door of my apartment where I listened intently and the cracked the door to be sure that all was clear. It was and I stepped out onto the cold stone floor of the hallway connecting all the third-floor apartments in the south wing of the building. I lowered myself to the floor in the middle of the hall, slowly since the floor was very cold on my bare skin and began playing with myself. I was acutely aware that I could be caught at any moment if anyone on my floor happened to leave his or her apartment while I was enjoying myself. This added to the fun and after I had finished, I decided to make this my new routine.
Needless to say, in the following weeks, I began working my way down the front stairs. I knew that this area was much better-traveled than the back steps since I found it necessary to cut things short on a couple of occasions when I heard footsteps on the stairs below, but I didn't let this stop me. After not very long, I was regularly lying naked on the floor, right in front of the south-wing mailboxes, working my pussy with the big dildo... all this just inside the all-glass front door that opened into the apartment's central courtyard... at about two-o'clock in the afternoon! Very reckless and very stupid!
And I soon realized this. I had nearly been caught on several occasions and had fled naked up the six flights of steps that led from the south-wing entrance to my front door. I knew it was only a matter of time until someone would catch me. So I stopped.
But I did have one final adventure a few months later. This was different from the other incidents, a one-time thing, not part of the routine. I came home from a party one night where I had been drinking a little. I wasn't drunk, but I was feeling a little more uninhibited than usual. (I no longer drink, by the way.) I was feeling horny and decided I'd masturbate before I went to sleep. I went to my bedroom, stripped, and took out my toy. I unlocked my back door, slipped out onto the wooden stairs, and made my way down six flights to the building's side door. I propped the door open (since I didn't have my keys) and walked naked into the dark alley that ran along the south side of the apartment. The tiny stones hurt my bare feet, but I walked carefully down the alleyway to the sidewalk that ran in front of my apartment building. It was about three-o'clock in the morning and there was no one to be seen. There was some occasional light traffic a few blocks to the north but the streets in my immediate area were clear. I walked a short distance and lay down on the sidewalk directly underneath a streetlamp. I spread my legs and slowly inserted my dildo. Taking my time, I enjoyed the cool breeze on my skin and the sound of the cars passing on the main street a just few blocks away. I didn't hurry and wasn't really nervous, just excited and horny. I had a wonderful orgasm, got to my feet, and retraced my steps to my room. As far as I know, no one saw me.
Let me mention that this was the last time I engaged in this kind of behavior. I knew it was stupid and potentially dangerous. I am very thankful that no one came upon me that night because I was definitely putting myself at risk. That was my final stab at exhibitionism. I hope you enjoyed it.