I work in a small key-man type office. Two of us work for the same company, overflow employees in a way, one office a lady that works for herself as some sort of designer, and the fourth office a lady that keeps books and records for an out-of-town contractor. Most days it's fairly quiet, everyone pretty much keeping to themselves. All the personal offices open to a common room for copiers, etc.
A few days ago I found myself seemingly alone in the office. My coworker had left to visit the main office on the other side of town, the designer lady was out, and I heard the front door close when the other lady left. Being perpetually horny I took the opportunity to wrap up some things I was working on, close the blinds on my office that look out to the sidewalk, then pull up one of my favorite webcam sites to watch some lovely ladies fondle themselves as I masturbated myself.
The afternoon was still fairly early, so I decided to activate my own webcam and do a bit of broadcasting myself, while I rubbed one off. I like to take my time in these little sessions, often enjoying the process for over an hour, sometimes approaching two hours before I finally cum.
Having two monitors I had larger images of ladies pleasuring themselves on both screens, with a small window down in one corner of my own cam just to see any comments viewers might have. Most of the time it was just other horny guys watching my cam, but now and then I'd have a female, or someone claiming to be a female, watching and commenting. That would usually get me off pretty quickly.
Anyway, there I was laid back in my office chair, both screens showing naked women actively masturbating, my lights up for my cam to be well lit, my pants down on the floor and my shirt pulled up on my chest, a full erection going as I stroked myself. And I heard it.
"Ahem." Fear flashed my eyes towards my office door as I bolted to an upright position. Sandra, the office worker that I'd heard leave, was standing there fully in my door with a grand view of what was on display by my webcam, staring right into my eyes.
"Damn, I thought you were gone." I was frantically trying to act calm, to pull myself up close under my desk to hide my full blown erection which was fairly rapidly receding. I thought I saw a trace of a grin on her face, but the scowl in her eyes said differently. She stared at me for several long moments.
"Edith and I suspected that you masturbated in here after hours, but I never suspected you would have the courage to do so while I was right here in my office. What the hell?" I had nothing. All sorts of horrors of being caught, being made public as some sort of pervert, a registered sex offender, and so on where whirling around in my mind. Sandra must have known that. She just stood there glaring at me. It was a long, long pause.