What is the definition of Citizenship Fluid?

"Citizenship fluid" is like a party where people can hop from one identity to another without much of a fuss. It's the phenomenon where your national identity isn't as rigid as it used to be, kind of like how you might switch from being a 'country boy' to a 'world traveler' at the drop of a hat.

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Here's a bit unsettling, but still entertaining, example sentence: "In the 'citizenship fluid' era, John suddenly declared himself a 'global citizen' and his passport became his new identity badge."