So, I was at school most of the day, and when I got home, my internet was out. Sorry.
Anyhow, here's two prompts:
1) Take a rather well-known story and write a parody. It will force you to closely examine the original, while opening up vague areas that you can clarify . . . humorously.
2) Create a character based on somebody you know. Place them in an awkward situation and let it play out. Oh yes, and involve a unicorn.