I get 'you and your sister are very alike, aren't you?'. Doh! Don't they realise we already know that?
I don't really mind repetitive small talk, like others have said, it's a way of talking to people you don't actually know very well. But when you stop and think about some of the phrases we all use, they are daft.
The comments made to mums of SN kids beggar belief, though. Although I have to admit I caught myself doing the 'wow, pg again'? reaction to someone with two kids with SN (luckily didn't actually say it). Not that I don't think she's got the right to have more kids or anything, just surprised she's keen to have even more demands on her time and energy.