I may have said this before, but --
Too many CDs think passing is "I'm a man dressed as a woman, in a public place, and nobody can tell." I think this is unrealistic -- how can you be certain nobody can tell? Just because nobody says anything? They may be pointing and laughing behind your back.
I prefer to think passing is "I'm a man dressed as a woman, in a public place, and nobody minds." Much easier to get along that way.