Well, it could mean being Hexadecimal or Octal... (just kidding: nerd joke)

I guess I'm non-binary right now (and maybe forever). Crunchy male-ish outer coating with a soft creamy sweet female filling (just kidding again).
I present to the world as "soft" male. That means mostly androgynous. My voice, beard shadow and frame spoof my attempts at pulling off presenting female most of the time (in anything but dim light). This is by conscious choice and is different from some who, as NB, just feel that they are truly neither gender. In my case, the suffering incurred by full transition at my age and place outweigh the suffering of just being where I am. YMMV. As the years of HRT use for me go by, I anticipate even the crunchy outer coating will melt away.