A Nigerian guy, Ghanian guy, a uglywoman and gorgeous woman are sitting in opposing seats on a train. After some initial introductions of where they're from and where they're going, they settle in to do their own thing and basically ignore each other.
Some time later, the train enters a tunel and all goes black, then suddenly they hear a big slap. As the train exits the tunnel there's the Ghanian with the side of his face all red wearing a look of shock.
In the mind of the ugly woman, "That Ghanian tried to grope the gorgeous girl and she slapped him!"
In the mind of the gorgeous woman,"That Nigeria tried to grope me, but got the ugly woman instead and she slapped him!"
In the mind of the Nigerian, "That Ghanian tried to grope the gorgeouswoman and she tried to slap him but got me instead!"
In the mind of the Nigerian, "I hope we go through another tunnel so I can slap that Ghanian again"