A truckers convention hosted truckers from all over North America and also Australia. As people were mingling around and talking, one of the truckers said to the other one: "Oh, I see the Australian truckers are over there. I'm going to go and talk with them." He had not heard the Australian truckers talking, and they did not have nametags or any specific clothing that distinguished them as Australian. How did he know they were Australian?
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Lateral Thinking Puzzlers by Paul Sloane has lots of classic riddles, clues and answers. Click here to order it.