About the end of winter is when you find the right balance between hot and cold, room temperature. You don't need to switch on the AC yet, but the fans need to be running at full speed in March. That's the time last year when my better half was away for about a week, and I had the lonesome bedroom to myself. The structure of our rented apartment is build in a way that the flat adjacent to us can peer through our windows, and us through theirs.

There were three young women renting that apartment, just beside us. All three were unattractive nursing staff at a nearby hospital - they would return late in the evening and leave again the next day, around noon. One day, I stepped out of the shower and did not notice the curtains were kept open. I casually went about my business shirtless, and somehow caught a peek of one such nurse on her phone. She immediately looked back at her screen in the distance, but my instinct told me she might have been looking.

The next evening, I quietly removed the curtains at around ten minutes past midnight. Switching on the bed light, I made sure there was just enough light for someone to catch a fleeting glance at what I was up to. My shorts were taken off, as I adjusted myself to have only the lower half visible from the window. Watching some porn on my phone, I applied some moisturizer and slowly stroked my shaft. This went on for about five minutes, to the point where I was completely erect. Ten minutes passed, and the foreplay gave way to penetrative action in the video I was watching. My shaft was positively throbbing at this point, which led me to spread my fair hairy thighs wide enough to reveal my big erection to the window. It was as if I was encouraging someone to enjoy the view.

It was getting out of hand after a while and I knew I was about to cum. I raised my pelvic region a bit in the air and choked my dick right near the base, jolting ten to twelve thick ropes of cum into the air as my thighs shook for a bit. It was a huge fucking mess which I had to clear afterwards, but just the thought of them watching me stroke and jerk for one whole session makes me real hard, to this day. Never have I repeated this since.