Australians call their notes by their color: A $20 note is a "red lobster," $10 notes are "blue swimmers," and $5 notes are "pink ladies."
United Kingdom
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Brits colloquially call pound coins squids or quid.
Spain
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Although Spain has adopted the euro, "pasta" remains a popular term from their days using pesetas.
Denmark
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Denmark uses the krona and the Danish words for hundred and thousand notes are shortened from 'hundrede' to ‘hund’ (dog) and 'tusind' to ‘tudse’ (toad).