OR WHAT?? That's a microaggression!!
The proper thing to do is hand the person you're speaking with a list of all 58 genders (59 actually, because it should also contain the option of "other").
Then give the person a pen and ask them to check off the applicable gender(s).
Only then should you actually engage in a conversation with that person, making sure to use the correct gender pronoun from that point on.
Of course, when I use the term "person," I don't mean to be speciesist.
OH NO!!!!!!!!!!!!!!
(Would they put me in jail for microaggression?)