A Viking fan, a Packer fan, and Pamela Anderson are sitting together in a train traveling through Switzerland when the train enters a tunnel and the car goes completely dark. There's a kissing noise, and then the sound of a really loud slap. When the train comes out of the tunnel, Pamela Anderson and the Viking fan are sitting as if nothing had happened, and the Packer fan is holding his slapped face.
The Packer fan is thinking, "That Viking fan must have kissed Pamela Anderson and she swung at him and missed, slapping me instead." Pamela Anderson is thinking, "That Packer fan must have tried to kiss me, accidentally kissed the Viking, and got slapped for it." And the Viking fan is thinking, "This is great. The next time the train goes through a tunnel, I'll make another kissing noise and slap that Packer fan again."