ningas-kugon

Etymology
From. Dried cogon grass is highly flammable & ignites easily, but likewise, burns out quickly or does not last long.

Adjective

 * 1)  fleetingly enthusiastic; hardworking, nice, or great at first, but eventually, no longer continues what was started

Noun

 * 1) ephemeral enthusiasm
 * 2) activity or project that doesn't last

Usage notes

 * This describes how an initially fiery excitement over a new endeavor loses steam very quickly.