Idioms
To "spend a penny" in British idiom means to urinate. The etymology of the phrase is literal; some public toilets used to be coin-operated, with a pre-decimal penny being the charge levied. The first recorded charge of a penny for use of a toilet was at the The Great Exhibition of 1851. Eventually, around the same time as the introduction of decimal coinage, British Rail gradually introduced better public toilets with the name Superloo and the much higher charge of 6d (21⁄2p).
Finding a penny is sometimes considered lucky and gives rise to the saying, "Find a penny, pick it up, and all the day you'll have good luck." This may be a corruption of "See a pin and pick it up, all the day you'll have good luck" and similar verses, as quoted in The Frank C. Brown collection of North Carolina folklore and other places.
It is also believed that one may get rid of bad luck by dropping a penny on the ground. The bad luck will go with the coin and be acquired by the next person to pick it up.
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