I think I've just noticed this more because apparently it's National Nappy Week right now.
I have a friend of a friend who is always putting up photos on FaceBook about cloth nappies - such as the birth to potty ratio of how many disposable nappies one baby goes through, or the latest cloth nappy she has just bought.
When she was at the same children's birthday party she gave people a demonstration on how to use them too.
I think it is fine to educate people and promote being more eco friendly, but she does it with such superiority that I feel if I got a disposable nappy out I would be extremely judged.
I have another friend who is like this, but less extreme.
Very willing to be told AIBU - because I'm just basing this one two people.
(Also sorry for posting in AIBU twice in one day)