DS isn't like that and neither is DH. But I have a big dose of this. DH says it's because I don't look people in the face, so I never really "see" them to begin with. It's so much a part of my life that I expect other people not to recognize me as well, but it doesn't seem to be the case. So when someone comes up to me to say hi, I usually feel embarrassed before I switch to that, "Uh, yes, and sorry, where did we meet?"