Her gust of laughter had a self-propelling recklessness I knew all too well from wild nights with Boris, an edge of giddiness and hysteria that I associated (in myself, anyway) with having narrowly missed death. There had been nights in the desert where I was so sick with laughter, convulsed and doubled over with aching stomach for hours on end, I would happily have thrown myself in front of a car to make it stop.