Writing prompts are designed to kick-start your creativity. A writing prompt is simply a topic around which you start jotting down ideas. The prompt could be a single word, a short phrase, a complete paragraph or even a picture, with the idea being to give you something to focus upon as you write. You may stick very closely to the original prompt or you may wander off. Read the prompt and see where it takes you.
The whistle blows to signal the end of the workday? If you had all the freedom in the world, how would you spend your free evening? Go there in your mind and describe your surroundings, what do you see, what do you feel?
Write a short story, start with The 5 O’clock Whistle. Where will you go now if you don't have to go home?
Writing is a great escape that takes you places you wouldn't be able to go.