Wired magazine (November 2006) asked sci-fi, fantasy, and horror writers from the realms of books, TV, movies, and games to write 6-word short stories. Arthur C. Clarke used 10 words, but all of the other stories are just six words long.
Perhaps the most famous "very short story" is by Ernest Hemingway, who apparently thought it was his best work:
For sale: baby shoes, never worn. - Ernest Hemingway
Here are some other very short stories:
God said, "Cancel Program GENESIS." The universe ceased to exist. - Arthur C. Clarke
Lost Scholarship. Invented rocket. - William Shatner
Computer, did we bring batteries? Computer? - Eileen Gunn
Vacuum collision. Orbits diverge. Farewell, love. - David Brin
Gown removed carelessly. Head, less so. - Joss Whedon
Automobile warranty expires. So does engine. - Stan Lee
Machine. Unexpectedly, I'd invented a time. - Alan Moore
Longed for him. Got him. Shit. - Margaret Atwood
Wasted day. Wasted life. Dessert please. - Steve Meretzky
With bloody hands, I say good-bye. - Frank Miller
His penis snapped off, he's pregnant! - Rudy Rucker
Internet "Wakes up?" Ridicu- No Carrier. - Charles Stross
From torched skyscrapers, men grew wings. - Gregory Maguire
Epitaph: Foolish humans, never escaped Earth. - Vernor Vinge
I'm your future, child. Don't cry. - Stephen Baxter
It cost too much staying human. - Bruce Sterling
We kissed. She melted. Mop please. - James Patrick Kelly
It\'s behind you! Hurry before it - Rockne S. O'Bannon
1940: Young Hitler! Such a cantor! - Michael Moorcock
We went solar; sun went nova. - Ken MacLeod
Lie detector eyeglasses perfected: Civilization collapses. - Richard Powers
I'm dead. I've missed you. Kiss...? - Neil Gaiman
The baby's blood type? Human, mostly. - Orson Scott Card
Don't marry her. Buy a house. - Stephen R. Donaldson
To save humankind he died again. - Ben Bova
Time machine reaches future!!!...nobody there... - Harry Harrison
Tick tock tick tock tick tick. - Neal Stephenson
Easy. Just touch the match to - Ursula K. Le Guin
Inspired by the above authors, I tried my hand at writing a few 6-word short stories:
Unlocked doors of perception. Lost keys.
Read his mind. Didn't take long.
Cloned a cannibal. Dinner for two.
Met God. Found salvation. Woke up.
I was never born. I'm nobody.
Dreamt I died. Never woke up.
The truth: The lie is false.
Changed my mind, so I thought.
Rebooted the universe again. Infinite loop.