A young Welsh girl, an old Scots woman, an Englishman, and a Frenchman are riding a train...
The train goes through a tunnel and it becomes pitch black in the car, a loud SMACK is heard... the train emerges from the tunnel and the Frenchman is rubbing his cheek.
The Welsh girl thinks "I bet he tried to grope me and accidentally got the old woman and she slapped him..."
The Scots woman thinks "He must have groped the Welsh girl and she slapped him..."
The Frenchman thinks "The Englishman must have groped the Welsh girl and she accidentally slapped me..."
And the Englishman thinks "I can't wait for another tunnel so I can smack that French guy again."