Non-binary genders

rude associations – now refers to people's presentation of themselves around the concepts of masculinity and femininity. It's cultural, not biological. So of course it's not binary. Admittedly it's something approaching binary in a strict Islamic society like Afghanistan – men in turbans and beards, women hidden away in burkas – but we don't do that. We do more or less whatever we feel like – even men with long hair and a lovely girly head tilt.