An ugly fat woman, a gorgeous young hot blonde, an American man and a Canadian man are all riding together in a train car.
As the train passes through a tunnel, the distinctive sound of a loud slap is heard.
When they emerge from the tunnel, a bright red handprint is on the face of the American.
The fat woman thinks "that dirty American grabbed that blonde in the tunnel and she slapped him!"
The blonde thinks "that dirty American must have tried to grab me, but grabbed the fatso by mistake and she slapped him!"
The American thinks "that Canadian bastard felt up that blonde and she slapped me by mistake!"
The Canadian thinks "I can’t wait ’til we go through another tunnel so I can slap that stupid American again!"