Three men, one american, one mexican, and one chinese, were hiking in an unknown mountain. They suddenly discovered a big cave. So they each decided to test its echo.
The american man shouted his name: “Tom”
The echo replied: “Tom”
The mexican man shouted his name: “Carlito”
The echo replied: “Carlito”
The Chinese man shouted his name: “Ching Chong Lao Song”
The echo replied: “what?”