I think everyone has played this game at one point. Each person adds something to the story. No stupid stuff please? If you see someone who has written something like "then suddenly they all slipped in shit and died. the end." delete it, because that isn't the purpose of it.
If it gets that far, the 20th person has to end it. We'll see what the do....
"Four days had passed since new years, and the people had returned to their normal selves. School was about to start, and I was getting ready for the day back. I realized I was missing my math book. I searched the house top to bottom and still nothing. While searching, I passed the clock in the living room. I was late!"
Take it as offbeat as you can go, try to add a touch of fantasy. =D