I agree 100% about the fluidity of human gender, but rather than lecture people via a form/api etc. it is probably simplest to have words that most people use like male and female and something ("other", "trans", "enlightened", whatever) for the 3rd option.

>> I just read your comment history and, if I'm not mistaken, you're already biased. Or would you care to elaborate what you wrote here? https://news.ycombinator.com/item?id=6451454

First of all that was a joke in the spirit of the Hangover 2. Might not have been that funny, but was an attempt at humor based on what it was responding to.

Secondly, I believe you are "biased" :) because though it is chronologically juxtaposed to this comment that's probably a coincidence because if you go through my comment history it might be the only one touching on the subject (I think, no guarantees).

edit - I did make a prison rape joke a year+ ago (https://news.ycombinator.com/item?id=4148572) but I actually heard from people that it was hysterical* because of the play on "backbone".

* hysterical is a sexist word, I know.