It's hard to write fiction and make it up as you go, but this is going to be fun because it can get so silly. Plus, it doesn't have to be very long! And none of it's true so there's no way you can make a mistake as you could in a factual story. AND it doesn't have to really make a lot of sense.
You know the example I gave in the Porch Swing thread? I was going to do a Christmas theme but got stuck on the word 'Frilly' and couldn't get away from it. Sometimes things like that will just write themselves.
You'll do just fine, Rita. You have a nice way with words already.