Our parties, needless to say, never went as we envisaged. No matter how we tried there was always some last-minute hitch that switched the points and sent our carefully arranged plans careering off on a completely different track from the one we had anticipated. We had, over the years, become used to this, which is just as well, for otherwise our Christmas party would have been doomed from the outset, for it was almost completely taken over by the animals. It all started, innocently enough, with goldfish.