As in, "Oh hi, my name's Mavis, nice to meet you"
There are several parents at DS' school whom I've chatted to about a range of things varying from trivial to quite personal at times, and I have no idea what their names are. It's been nearly two years. I can't ask them now! This goes for neighbours, too. I only know the names of the ones who've sent Christmas cards.
They all know my name because I introduced myself, which is a habit I picked up from my old job I suppose, it's just polite isn't it?