That's an interesting question, and one I've thought about even though I'm not going out. I'm over six feet and as a relatively normal male I do notice tall women, tall being defined as "as tall or taller than me." six-foot-plus ladies are just unusual enough to pique my interest. Since I've become more self-aware the next question that pops to my mind is "Is that a CDer?"
Now, previous to that awareness I probably wouldn't have thought about CDing. Unless there were really blatant clues I wouldn't have questioned the gender of the tall woman. Politeness demanded that I not stare for too long so I wouldn't have much time to decide unless I were in some sort of situation where I were interacting with her.
If one did detect a clue, politeness would demand that one would not make a scene. The only people who might cause grief if they read you are drunks or teenagers.
For any observer of shorter stature there would be less reason them to look closely. There are plenty of women taller than they are and exactly how much taller isn't really worried about.
Anyway, that's my take on it. YMMV!
