CWJ stands for Creative Writing Journal. Sometimes where I work, we have a Creative Writing Drill. Sometimes our writing cue is a thing like, "Best Vacation Ever." Other times, we bring out a flip chart that gives us a random setting, character, and plot.

This time the cue was:
Start with: It was a dark, windy, and stormy day.

This one was written in about an hour (around distractions).