There's a Kiwi rugby fan, an Australian rugby fan and a beautiful woman sitting next to each other on a train.
The train enters a tunnel and everything gets dark. Suddenly there is a kissing sound and then a slap! The woman and the Kiwi are sitting there looking perplexed. The Kiwi is bent over holding his face which is red from an apparent slap.
The Kiwi is thinking, "That Australian must have tried to kiss this lady, she thought it was me and slapped me."
The lady was thinking, "That Kiwi must have moved to kiss me and kissed the Australian instead and got slapped."
The Australian was thinking to himself.... "If this train goes through another tunnel, I could make another kissing sound and slap that Kiwi in the head again."