As a lad we lived in Southampton for a year or so and during a few weeks out of hospital my mum would let me out for a few hours, clean and smart with a white shirt, we were living close to the docks and I loved crossing the railway on a footbridge with a massive span over many busy railway tracks, with constant steam trains passing underneath, I could see the massive boats in the docks but I loved to watch the trains, when I got home my mum would say you have been down those docks again, I thought how did she know I had kept my shoes clean, wore gloves so my hands were clean, of course what gave the game away was my sooty face and clothes , and yes I probably smelled like a steam train.