Wired magazine asked a pile of mostly SFnal people to write six word stories. (Inspired by the famous taunt of F. Scott Fitzgerald to Ernest Hemingway that the latter couldn't write a story at that length. Papa, of course, replies: "For Sale: baby shoes, never worn.")

The results are all posted over at Wired's site, and I know I've seen other people trying to play the game as well. (The one I can remember specifically, and find, is from the Usenet group rec.arts.sf.written, which descended very quickly into author-bashing.)

For myself? Well, I'm not a writer, but how about:

Secrets not meant for man? Pshaw!