According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
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Many believe that if all of the candles on a birthday cake are blown out with one breath, while making a silent wish, the wish will come true.
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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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In some parts of England, rum is used to wash a baby's head for good luck.
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Placing a hat on the bed is, apparently, bad luck. (South Carolina)
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It's bad luck to leave a house through a different door than the one used to come into it.
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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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It is bad luck to put new shoes on a bed (or a table) (comes from the tradition of dressing a corpse in new clothes and shoes and laying them out so everyone can give their respects) - (UK)
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