Writing Time Again

Again, in my creative writing class we are writing short nonfiction stories. I'm having a long brain fart and can't think of anything to write about and it has to be short, short, short. Way less than 4,000 words. I was thinking something along the lines of heroes and villains but then I came to the conclusion that that certain topic is way to overused so then I thought about villains versus supervillains. Bad vs. worse. I haven't read many books like that and it might be good to write about that then jolly pink bunnies since I'm not really into the whole sunshine and rainbows scene. (: I guess I'll go get started on that little tangent and see where it takes me.