
A nine days’ wonder
Brief Popularity
Use this phrase when something is trending or popular for a very short time, then fades away.

The meme was a nine days’ wonder, spreading like wildfire and then disappearing.
Fleeting Interest
It implies that the public's interest is temporary and not deep, often following a fad.

The diet fad turned out to be just a nine days’ wonder.
Not Enduring
It suggests that the subject will not have lasting value or impact.

Everyone thought the show would be a hit, but it was just a nine days’ wonder.
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