all the thing

all the thing or all the rage, the in thing  {n. phr.}
The fashionable or popular thing to do, the fashionable or most popular artist or form of art at a given time.
After "The Graduate" Dustin Hoffman was all the rage in the movies.
It was all the thing in the late sixties to smoke pot and demonstrate against the war in Vietnam.
Categories: noun time
Source: A Dictionary of American Idioms

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