If a short-short story is 250-1000 words...
Well, technically, it's three words shorter than the longest short-short possible.
It's about two schoolgirls who fail to avert the end of the world. They die, of course (but off-screen).
I also worked on two other short stories for Red Spikes. There is nothing like (a) rainy weather and (b) [drastically, pant, pant...] limiting your alcohol intake the night before, for a productive day's writing.