CP3S said:

I grew up in city that had a large enough Mormon population that we had a massive temple in the middle of it. If you were white and middle-class in that town, there was a very high chance you were Mormon. I once had an elderly woman approach me in the toy section at some department store when I was six or seven and tell me what an adorable young man I was, then asked if I was LDS. When I told her "no" her response was to look away, say "That's ashame." and not say another word to me. Creepy to start with, that just made it creepier.

My guess? She has a granddaughter and was looking for a nice, young, handsome LDS guy for her. Mormons can't marry non-Mormons, so she wasn't interested in your meeting her granddaughter anymore.

I'd be interested in hearing thoughts about the "white and middle-class" bit, though.