I'll preface this by saying I have no idea whether I have AS or not. My son probably does, and the more I read about it, the more things from my past "click." I suspect that were I to undergo testing, I'd place near (but not quite on) the spectrum, as I've had many years to work on my challenges. But I'll answer anyway.
Do you forget what words you're choosing while speaking to new people, or forget what you are talking about mid-sentence? I typically just smile and nod the first time I talk to someone. I've said way too many stupid things in the past!! As for the midsentence amnesia, well, that happens even when I'm talking to my husband.
Do you easily get lost in your own neighborhood? I LOVE my neighborhood. I live on a mountain and if you keep heading up, it doesn't matter which of the two roads you take, you eventually wind up on my street. But yes, this used to be a problem for me. In fact, I have tried to visit places I've lived before, a few years removed from when I lived there, and I cannot find my way to my old house. And once, I got lost in my school cafeteria after they remodeled it over the summer. I still cannot find my chiropractor, my in-laws' house or my favorite grocery store without GPS.
Do you not know your own phone number? I have such trouble with numerical sequences. Anything longer than three digits, and I begin transposing numbers. I know my cell number because I picked something I would remember (the first three numbers are a palindrome and the last four, paired, add up to 100). I have no idea what my home phone is and I'm never confident about my street address. Also don't know my hubby's cell number, and he's had it for three years. Hooray for speed dial!
I know that I come off as a ditz. When I was working (in media, where people are, by necessity, fairly glib and articulate), people who were not familiar with me assumed I was hired for my looks, because I admittedly do not come off as intelligent, interpersonally, until you've been around me for long enough. I come off great in writing, but unfortunately I can't script first impressions! Also, I fall over my own feet constantly, and although I don't believe coordination goes hand-in-hand with intelligence, I suppose I looked pretty dumb hitting my hip on the same part of my desk every day. Those idiots who made the comments about why I was hired as an editor had zero idea that I had to take a copy test when applying for that position, and that my score had been so excellent that I heard about it through the grapevine in my previous department before I got the call from my boss.
The worst, though, is that because I'm not "outgoing" (and if I try to be, it comes off really fake because, well, it IS!), I get labeled as both a ditz and a b***h! But I find that, with a combination of hard work, loyalty and kindness, and occasionally standing up for myself (not nearly as often as I ought, though!), I get by OK.