Now in my RL company there are very few women that are what would be considered young porn star-quality babes. In general the women are older, but there is a bit of a variety of ages, shapes, sizes, ethnicity, marital status, and education. This fantasy works for all of them - when a dirty old man works with a woman all week, perhaps for years, she doesn't need to be all that attractive for him to want to see her strip naked and shake her flesh. These horndogs are forgiving of physical flaws, and dancing talent doesn't mean all that much.
One of the attractions of this fantasy for me is the idea that it could be any woman, any man's wife, regardless of age, shape, or color, doing this; and that her husband, family, neighbors, and friends would never guess what she is doing at the office.
I'm sure most of you can think of a woman that this fantasy, or some variation, would work for.