flash in the pan

something or someone that became successful quickly and is unlikely to be repeated

Example Sentences:

The first album from the pop band was a #1 hit, and then they disappeared. They were a flash in the pan.

Is the iPad a flash in the pan? Only time will tell.

From the Blogs:

Flash in the pan baseball players

Media:

Similar idioms:

1. paint the town red
2. the elephant in the room
3. out of the frying pan and into the fire
4. shell out