Not all memories are good ones. All of us can recall at least one incident that embarrassed us, humiliated us or angered us. Or maybe it was something we did that we wish we never had.
Think of the story this could become! Fill in with sensory details and it becomes rich and full of life.
Your task is first to make a list of five events that you wish had never happened. Then choose the one which would be the easiest for you to write about.
When you write, embellish with dialogue and details. There must be tension, so bring in a person that enriches the telling.
Have fun with this one.