I could've pulled out my sketchbook, which I had with me, but it would've meant pulling my attention away from my lunch partner, which I wasn't willing to do.
This is the sketch I made of the woman a day or two later. It wouldn't hold up in court. It wouldn't help police identify the person I saw, I'm sure. But it IS an accurate record of my impression of this woman — her attitude, the general lines of her face and the almost absurdly old-fashioned hairstyle.
If you like to draw, I recommend adding this kind of drawing to your repertoire, if you don't already use it. Many of us bounce back and forth between observational drawing (great for practicing accuracy) and imaginative drawing (making stuff up! yay!). This lies somewhere in the middle, and endures as a record not of what we saw, exactly, or what we conjured up, but of how something hit us. And if we practice this with people, we end up with a bunch of potential characters for stories, comics and whatnot.
Especially whatnot. Very important ...