
A flash in the pan
Temporary hype
Use it to describe something that gets a lot of attention quickly but fades away just as fast.

The new app was a flash in the pan; everyone forgot about it within weeks.
Pop culture reference
Often applies to trends or celebrities that briefly capture public interest.

That viral dance was a flash in the pan; nobody does it anymore.
Not negative
The phrase is neutral; it doesn't blame the person or thing for not lasting.

His witty quotes were a flash in the pan, memorable but short-lived.
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