I'd forgotten to say that Sasha is now beginning to put words together, which is fascinating to hear. The sibs have been keen to teach Sash the word 'bum', causing much giggling in the back of the car. Then last week the child farted, looked at me, and said "Noise. Bum." What a prodigy. I thought that was quite conceptually sophisticated, but I may have suddenly morphed into Competitive Parent.