I don't have any pictures but one time back several years ago I was doing some part-time work on my regular days off for a guy who ran an accounting firm. I would work late with him and he began to get very flirty and I enjoyed the attention. I always dressed conservatively in the office, long knee-length dresses or skirts. Over time the flirting became more physical and he would call me into his office and he would rest his hand on my shoulder or back while he and I talked about accounts while standing at his desk.
One evening he asked if I could stay late to work on a large account. That evening, I was in his office reviewing spreadsheets and I was wearing a long, ankle-length skirt and sweater. The skirt was really cute with a white lace hem at the ankle and on the side of the skirt that had a slit up about mid-thigh. He commented on my heels and the new skirt and as we stood in front of his desk, his hand moved and rested on my butt. Once he figured out I was not going to object he began to rub my ass and I enjoyed the sensation. As a mom of four kids, it was nice to feel desired by another man.
Things just sort of happened, I put both my hands on his desk and bent slightly forward and he got behind me and rubbed my ass through my skirt and then began to lift my skirt from behind. After he raised my skirt up over my back, he slowly began to remove my panties and then took out his penis and entered me from behind. I think the naughtiness of the situation and being bent over his desk with his office door wide open, not knowing if we would be caught was hotter than the actual sex.
Our regular over the desk fun lasted about three months afterward before the temporary job came to an end and I never saw the guy again.