Chinese Whispers' Game
In the game of Chinese Whispers you whisper a simple phrase to the person next to you and they repeat it to the person next to them, and so on, around in a circle until it finally returns to you. Then you find it has been transformed, either accidentally or deliberately, into something entirely unrelated to what you said. If nothing else, this teaches us to be wary of relying on rumour, gossip or hearsay.