I never know how to respond until it's too late. For example a df has lots of kids and I have 1. I am happy with my choice and she with hers. We were discussing camping and when I suggested a bell tent to another friend my friend piped up with ' no use recommending that...he has 3 kids whereas you only have 1.' I felt this was a bit of a dig as it has nothing to do with putting up a tent unless she meant that it is harder with 3 kids.
I know the mumsnet classic is 'did you mean to be so rude!' I don't think my friend was being rude...she just cannot get her head around that I don't want lots of kids. I just wish i'd said 'what has that got to do with putting up a tent?'
I was just dumbfounded instead!