You'll need to be quick because the closing date is August 15th, but then how long will it take you to write 100 words? Actually, I would tell you to take as long as it needs (before the closing date) to get your entry perfect, but if you're up for a challenge why not enter the Wigtown Book festival 10th Anniversary Short Short Story competition?
Student Heather Bestel brought this to my attention because she lives nearby in the beautiful Scottish region of Dumfries and Galloway. If you've never been, then go - it's scenically outstanding and a very quiet region of Scotland - perfect for getting some writing done.
Wigtown is also Scotland's official Book Town, and is full of secondhand and new bookshops - a bit like Hay-on-Wye in Wales. I've been there a couple of times and always seem to come away from there with another carrier bag full of books!
Anyway, if you click here, this will take you to the site where you can read the entry rules, and if you;re chosen to be the winner, you could win a free ticket to every event in the 2009 Wigtown Book Festival. Entry won't even cost you a stamp, you have to email them, so there's no excuse.
There is a theme, "On The Edge" so your short, short story needs to be linked to this theme in some way.