My DS (2.6) is very tall and has quite an old looking face - plus his new haircut makes him look older. People usually realise how old he is when he starts talking but some people have assumed that he is four and is putting on a babyish voice.
Yesterday an acquaintance assumed that he was mocking her daughter because he mentioned her pink bicycle (he wasn't, he was just interested in the pink bike). I said that he wasn't and that at two he has only really started talking in sentences. Am now wondering if I am being a bit precious.