Yesterday morning I went to the supermarket. I was in a hurry as I had to finish a pavlova to take to a friends party. The supermarket was packed and traffic was standing waiting for spaces (one in one out). I was politely queueing when a driver got into her car just ahead of me obviously about to vacate a space. I waited behind the space indicating left that I was waiting . I gave her enough room and time to manoevre out. As she was doing this I saw an old woman in a bettered car behind me trying to squeeze down the inside to pass me and making it difficult for the other driver. I hooted as she almost scraped my car. To my disbelief she then swung into the space I had patiently waited for. I wound down my window to state the obvious that she was taking my space. She replied "so what" . I said you can't do that, we are all waiting". She relied I can do what I like. Two other drivers who had witnessed this also got out of cars to back me up. I was livid. In the end the parking warden came to sort it out. He pointed out another space ahead now empty and asked me to park in it. I did . I returned to speak to the other woman (aged about 80, dark glasses and very snotty). She continued to be rude when I repeated that her behaviour was unacceptable, and rude. After finishing my shopping 10 minutes later I was still very shaken up and angry. I tool a carton of cream from my bag and dribbled the word RUDE on her windscreen before driving off.