Opening an umbrella indoors is said to result in 21 days of bad luck. Some traditions hold that it is only bad luck if the umbrella is placed over the head of someone while indoors.
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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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An acorn should be carried to bring luck and ensure a long life.
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Amber beads, worn as a necklace, can protect against illness or cure colds.
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Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
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According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
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Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
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Placing a hat on the bed is, apparently, bad luck. (South Carolina)
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