A few years ago my boss hired an assistant to 'help' him. She was fresh out of college, incredibly hot and actually really nice. We would often have lunch together and as a result I ended up spending a lot of time with her – time that allowed me to develop some great fantasies. I would often find myself masturbating at home while thinking about her.
On one lunch hour, for some reason our talk turned to sex. We began talking candidly about what we like to do, how, where, etc. Needless to say by the end of lunch I was quite wound up. I had a raging hard-on and a strong desire to hit on her. I resisted the temptation as I am married and she had made it pretty clear that she wasn't open to advances.
I should tell you that my office while open concept was around the corner from everyone else. I can hear anyone approaching unless they were to tiptoe (and who does that in the office?). The other two people in the office were on the other side of the building and didn't really come over to our side.
I was incredibly horny, my cock was throbbing to distraction. Normally I would nip off to the bathroom for a quick wank but not this time.
I could hear that she was using the phone in my boss's office and could tell she was chatting with a friend and that she would be on for a while. Throwing caution to the wind, I lowered my chair and leaned forward on my desk so my crotch was safely under my desk. If I heard anyone approaching I could cover myself with my sweater and the desk. Aside from someone kneeling on the floor to look under my desk they would see nothing.
I reached under and fished my cock out and started to slid my hand along its length. I was totally nervous about getting caught but couldn't help myself. I kept thinking about what she had said over lunch- thinking about getting her gorgeous body naked- about fucking her silly. I could still hear her voice on the phone and let that sound carry me. I knew I had to finish quickly. I put all my effort into reaching orgasm. My hand was a blur and I would have been totally busted if anyone turned the corner. There was no hiding what I was doing as I finally reached a fevered pitch and shot my load all over the bottom of my desk and floor.
I quickly regained my composure and cleaned up. While she no longer works here I do still run into her from time to time and often fantasize about mutually masturbating with her or even just for her. For now I just have memories of her and my very daring afternoon at my desk
Sinister (the left hand)