In a train car there was a Canadian, an American, a 
spectacular looking blonde, and a frightfully awful 
looking fat lady. After a while, the train happens to 
pass through a dark tunnel, and the unmistakable sound 
of a slap is heard. When they leave the tunnel, the 
American had a big red slap mark on his cheek.  
  
The blonde thought - "That American son of a bitch 
wanted to touch me and by mistake, he must have put 
his hand on the fat lady, who in turn must have 
slapped his face."  
  
The fat lady thought - "That dirty old American laid 
his hands on the blonde and she smacked him."  
  
The American thought - "That damn Canadian put his 
hand on that blonde and by mistake she slapped me."  
  
  
  
  
  
The Canadian thought - "I hope there's another tunnel 
soon--so I can smack that stupid American again."