My mum, son, daughter and I were returning from holiday on a train to Manchester. My son (aged 10) and I got up to retrieve our suitcases ready to leave the train. I was wearing a short jacket with a zip which had a toggle drawstring at the bottom. As I neared the door it automatically opened and caught one of the toggles. It was completely jammed and I couldn't pull it out. My son thought I was joking and was furious with me. I tried to move away from the door, out of sight of the 'magic eye' which kept making it open and close.
I tried to move the toggle up to the top of the door, by standing on tiptoe, and down to the floor, by crouching down. The door was swishing open and closed, people were turning around by this time and my son was scarlet with embarrassment and fury. He had turned into Basil Fawlty by this time and was hissing at me through gritted teeth, "Get it out of there!"
Then my mum walked down the carriage, trying to help, and asked in a loud voice, "Has anyone got a knife?" Really not the thing to ask!
Eventually, the guard and another passenger managed to prise apart the door and frame just enough for me to pull out the toggle.
We all left the train red-faced, but it was ages after that I realised it might have been a lot easier if I had taken the coat off! 