"I need to go to the bathroom." Innocuous words, unless spoken, say, on a full elevator, or in the middle of rush-hour traffic, or especially on the subway, as they were that day. The subway car rumbled to a stop, but not their stop. "Can you hold it?" she asked. "Yes." But the brown eyes looking up at her seemed just a wee bit desperate. The train started up again. Two more stops. Hopefully there would be some place with a public toilet aboveground, some building that had a big neon sign flashing "TOILET! TOILET!" The train lurched to a stop, and they jumped up out of their seats to make their way out of the train, out of the station. Stairs up and up and up to a street in Brooklyn, just like any other street in Brooklyn. There were no flashing neon signs. "I really need to go," he said. There was a furniture shop, a bakery, and a small grocery. The grocery looked the most promising. They stepped in, "Do you have a restroom?"...