Snowed in? Exercise your writing brain with a bit of snow-day Twitter fiction. Every Friday Writer’s Digest leads a storytelling exercise on Twitter called #storyfriday.

At 9:30 a.m. EST on Friday, the site posts a 140-character first sentence from a story. Readers will weigh in all day, contributing new lines to the reader-produced story. If you want to contribute, read the story so far and then contribute your own line–with the hashtag #storyfriday appended to the tweet.

Here is the first line of today’s story: “Jake waited in the emergency room to get word on his friend Tim. He never expected their crazy night to lead to this. #storyfriday”

If you just want to read along, you can follow all the action at this link.