I used to work at a large insurance company and occasionally needed to be in the office at night. I don't remember how it began, but I started to use the women's restroom on nights that I was working late. I suppose it was just for the fun of it. I liked thinking about some of my more attractive female coworkers placing their asses on the toilets. Naturally, this led to me jerking off in their restroom.
At first, I would jerk off sitting on the toilet in one of the stalls. But, eventually I did it in the open area of the restroom and shot my cum on the wall. At first, I cleaned it up. Later, I began to just leave it.
There is a whole wall of the restroom that is one big mirror. So, I began taking all my clothes off so I could watch myself stroke. I love to watch myself masturbating, and the thrill of doing it there was intoxicating.
Finally, what I feared (and hoped for?) happened. One of my female colleagues entered the rest room just as I was shooting a load. Unfortunately, she was not one of the young 'hotties' that I fantasized about. She screamed and left immediately. I wiped off my dick and hand and got dressed. I did not show up for work the next day...or ever again.