Say a line for a story starting with a certain letter, and then the next poster will have to continue the story with the letter that is next. Don't use letter X because there are no words that begin with it. For example:
Poster 1: Adam, why did you steal my car?!
Poster 2: Because I liked the color.
Poster 3: Could you be any more cruel?
I'll start
Do you like strawberries?
Poster 1: Adam, why did you steal my car?!
Poster 2: Because I liked the color.
Poster 3: Could you be any more cruel?
I'll start
Do you like strawberries?