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It is dark, way past midnight and I am rushing down the corridor of our family home in the village, where we holiday once or twice a year. My bladder is almost bursting as I run to the only toilet in the house, but the toilet is locked. Beside the toilet is a step-in shower — the untiled ones with a cement screed floor — shared by other occupants of the house. Unwilling to go out in the haunting darkness outside, I relieve myself in the shower…