✔ A flash in the pan
You can say something or someone is a flash in the pan if they’re popular or effective for a short time only.
■ For example:
- Her first song was a big hit, but when Debbie’s next song didn’t do so well people started calling her a flash in the pan.
- Dave says he doesn’t mind being called a flash in the pan because he still gets money for the book he wrote, even though he never wrote another one.