It was almost one in the morning when I returned to work. The last people finish their shift at 11:00 PM and then with shutting stuff down and turning things off the final person probably leaves by about 11:30 PM. The Security guard wonders around for another half hour before they too leave. So at 1:00 AM my workplace was deserted. I swiped my badge and quietly pried the doors open. Not sure why I was being quiet, guess I felt like I was doing something wrong and needed to be sneaky. That was kind of the plan anyway.
I was going to decorate someone's desk for their birthday, but I didn't want anyone to know it was me, especially them. They hated me, not sure why, but they did. The fact that 'they' were a she, beautiful and funny with everyone else except me, was in a weird way, the motivation for doing this. She would never believe I would do this which made it all the more perfect thinking about her trying to figure out who had.
So here I was with a bag of decorations and crap doing something totally illogical. I know, weird, but to me it was amusing. I made my way into the darkened building, put the stuff on my desk and headed to her desk to check everything out. I get to her cubical and look over the wall to see if I need to bring a chair or something to stand on and she's there!
She is leaning back in her chair with her eyes closed, her feet up on her desk either side of her keyboard with her hand up her skirt obviously fingering her pussy. Her other hand is inside the plunging neckline of the top she's wearing, massaging her right boob and pinching on the nipple. She probably figured on keeping enough clothes on just in case someone did come back that she could easily recover and look innocent. All that took me but a second to take in and I quickly ducked back down.
OMG! This was the erotic twilight zone! As quietly as I could I ducked down and crept around to the entrance to her cubical. Before I made my entrance I unzipped my pants and got my cock out. Praying to whatever god was listening that this worked out as I hoped it would, I stepped into her cubical and watched her. She still had her eyes closed and her hand was moving feverishly under her skirt obviously building to a strong climax by that point. I started stroking my cock in time with her movements. I guess she finally sensed my movement and her eyes blinked open. Given that her head was tilted back, she saw me... upside down. She frantically got her feet off her desk, kicking the keyboard and her phone in the process, and spun around in her chair to face me pushing her skirt down as she did so. I saw several emotions expressed on her face one after another. She was embarrassed at being caught like this, shocked at not having heard anyone approach and finally, recognition, that it was me, the person she didn't like, the one she avoided, didn't talk to and wanted nothing to do with. Then she saw my hard cock. My very thick hard cock, sticking out of my pants. For my part, I just stood there with a bemused smile on my face and waited to see how things would play out.
"No one will ever believe you if you tell them you saw me doing this. They will think you made it up." I smiled and stroked my cock a couple of times. She paused for a moment more and looked at my thick cock again. "They would never believe you fucked me either." I took that as my queue and moved towards her. She came up out of her chair and I grabbed her and she grabbed me. We didn't kiss, instead, I attacked her neck, lightly biting and sucking, which caused her to hiss, "You better not leave any marks!" She now had a hand on my rock hard cock and was realizing that her fingers couldn't go all the way around it as she stroked it back and forth. I held her shoulder with my left hand while I started massaging her DD tits with my right. I pushed her top off of her shoulders. The plunging neckline made it easy. It just dropped off her shoulders and gathered at her waist above her skirt. She must have been out partying and decided to come into the office to have her own naughty birthday celebration. Now I had her nipple between my fingers, pinching and pulling in between massaging her fabulous tits.