Cazboldy - I like that question - it means I can say, No, they have one each. Has an amasing effect on people, espcially older people (although can be a shameful waste in sputtered coffee )
TBH I don't see it as rude, I was 27 when dd3 arrived and I get the young one all the time too, I just think that it is so unusual now that people just have no idea how to respond!
I mean people really agonise over having three, like it really is breaking some kind of social taboo to have, more than 1 or 2 children!