Peter Dyer, drama and teacher trainer from Australia:
The Contradiction Game
There is a storyteller who can be changed from time to time.
He/she starts with a sentence:
A: Last month Gramma flew her new helicopter to Cairo.
B: (Then another goes on saying) Did you say Cairo?
A: Well, actually it was not Cairo, it was close to Cairo, you are right.
It goes on like this: one sentence - one contradiction.
The storyteller becomes a comedian and who is telling the story? Everybody.