I've seen it all this past season. Mostly yuppie moms (but a few dads) who don't mind telling you how to 'better' run one's life.
I received a lecture, from a mother of two, at a birthday party regarding the plastic garbage bags that I was using to contain the trash. She insisted that I was further damaging the the ecology of the planet. I'm not certain just what I was supposed to contain the trash with... perhaps a few thousand butterfly cocoons? After lecturing me for almost ten minutes, she politely and in a most sophisticated way, excused herself to walk up to the parking lot to smoke a cigarette!