I tell them the truth, I'm a housewife. Most people do see that as an ok job of a gal my age, so I don't usually get looks about it. It's a decision DH and I made together a long time ago, and I've worked some when needed here and there, but this is what I wanted to do for a career.
DH has been out of work before for a while, as have several people we know. They usually say "I'm a <whatever their trade/career is> but I'm out of work right now". That can help if you don't want to go into long explanations. Most people accept that just fine, especially with the economy the way it is right now.
Also "Well, I'm looking for work right now unfortunately" works, or "I'm between jobs, you know this job market now".
Saying "I'm writing right now" can be said in honesty because you obviously write something down every day even if it's a post here or there. If they ask what you are writing say "Oh, this and that" and then in the same sentence ask them about their job or something else.
If you haven't had or can't get a job just say "I'm not having any luck finding work right now, I have a disability (or you can say AS, or autism spectrum or whatever you are comfortable with)" Saying it matter of factly like that could actually open the door to them asking about your AS and why it can be difficult for some people with it to find work. It can help spread awareness one person at a time, and they may actually know somebody who is looking for help that would be suitable for you.
If you are on disability just say "I'm on disability, unfortunately" and then ask about their work, etc. If you say the "unfortunately" afterwards they won't think that you are just mooching or don't want to work, etc. Some people get that way because a lot of people fake things to get on it. If they ask why and you don't mind talking about it, use it as an opportunity to educate them. If you don't want to talk about it say "I'd really rather not talk about it if you don't mind" and smile a little so they know you aren't being snippy with them.
Those are the suggestions I have about it.
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I'm giving it another shot. We will see.
My forum is still there and everyone is welcome to come join as well. There is a private women only subforum there if anyone is interested. Also, there is no CAPTCHA.

The link to the forum is
http://www.rightplanet.proboards.com