Never did it in an office, but others I knew did. Closest I came was some kissing and heavy petting with a temp in a storage room. You just had to know where the cameras were.
On a porch swing on a cool autumn night in the King William District. In a car by the railroad tracks near Brazos St.
I almost forgot. I made it with a hairdresser at her salon aback in the 80's. It was Sunday and I actually drove her there to replenish her workstation. Since the salon was closed that day we just sat and talked for almost an hour, and then just decided to fuck, so we stripped naked and actually did 69 on a salon chair among other things. We were more acrobatic back then.
Angel, I think I would like a lap dance next time. ;-)