So while in my rant mode, surely "Ladies and gentlemen" covers all the bases doesn't it? I mean you may be a lady trapped in a gentleman's body, or vice versa. What you're not going to be is a Martian with two willies . . . . are you?
Apparently there is a section of of society that consider themselves neither male or female, my thoughts are if they are struggling with the ID maybe a quick check down below may help them solve the conundrum!