I knocked on my neighbour’s door last night. “Sorry John,” I said, “I know you’ve only just got home from work but I need your help. I can’t get into my house. I was in a rush and my front door key is in my trousers which I’ve left beside the bed.” “Okay, so what do you want me to do then?” he asked. I said, “Go upstairs to your bedroom and get them for me.”