i agree with everything you're saying alessandro ...for a while i decided to walk around with that poker face where i live, and it really wasn't a good idea,..people just thought i was rude.
but that's one of the big problems here, there's lots of different generations and people from all over the world coming together, talking about what passes as male/female and what doesn't, when it really depends on where you're living and what age group people place you in. for example in urban areas here, long haired boys in skinny jeans and tight pink shirts with big smiles on their faces and an enthusiastic pitch are perfectly normal. that same person walking through a very rural part of the country would just be STARED at and people might whisper "is that a guy or a girl???"
I have seen people here who in my environment WOULDN'T pass because their clothing and haircut would be way too conservative for their age group, they would look like pretending an outdated kind of masculine look, and thus they would be thrown into the lesbian category.