Origin of phrases

Raining cats and dogs:
Origin: 17th century
Story: Some speculate that this phrase arose in the 17th century as a result of poor drainage systems in Europe. During heavy showers, drains disgorged their contents of any animal corpses that may have accumulated. This occurrence is documented in Johnathan Swift’s 1710 poem ‘Description of a City Shower’, in which he describes “Drowned puppies, stinking sprats, all drenched in mud,/Dead cats and turnip-tops come tumbling down the flood.”
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