Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
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In Asia, the digit 4 never appears in any Nokia handset model number, because 4 is considered unlucky in many parts of Southeast/East Asia.
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Placing keys on a table is considered unlucky. (Sweden)
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An acorn at the window will keep lightning out
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Before traveling a person should, apparently, sit on their luggage. (Russian)
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According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
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When you speak of bad luck, it is said that one should always knock on wood. Also knocking when speaking of good luck apparently helps with having good luck. This is an old Celtic tradition related to belief of wood spirits.
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There are numerous sailors' superstitions, such as: it is considered bad luck for a ship to set sail on a Friday, to bring anything blue aboard, to stick a knife into the deck, to leave a hatch cover upside-down, to say "pig", or to eat walnuts aboard.
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