Plural of 'buzzy'; things that buzz, or colloquially, exciting or trendy items, people, or topics.
From 'buzzy' (adjective formed from 'buzz' plus '-y' suffix) plus plural '-ies'. This nominalization treats the adjective as a noun to describe multiple buzzing or exciting things.
Converting adjectives into nouns with '-ies' is a playful feature of informal English—'cuties,' 'fuzzies,' 'crunchies'—it adds a diminutive, affectionate quality, making important topics sound more approachable and less formal.
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