This is similar to the other 'build-a-story' games, but the goal is to get sidetracked as much as possible while holding some relevance to the last post (nothing completely random). For example:
Person 1: There once was a man who lived in a house on a hill. Person 2: There was a garden next to the house. Person 3: The vegetables in the garden were frequently stolen by rabbits. Person 4: The rabbits were shot by the police. Person 5: The police...
I'll start
There once was a man who went to the store to buy some chocolates.
Unfortunately, a Guinness Book of World Records from the previous year was badly damaged during the water baloon fight. The paper from the book was later recycled into paper cups which were used during a water drinking contest.