I found this interesting – Very Short Stories (link sent in via e-mail from a batchmate)
The idea is to write a story in 6 words. Yes, you read that right – 6 words.

The above link lists some 6-word short stories.
My favourites are excerpted here:

For sale: baby shoes, never worn.
- Ernest Hemingway

I saw, darling, but do lie.
- Orson Scott Card

I am now on the hunt for a one-word story, if there is something like that.
Beyond that, I think silence will have to speak for itself.