Amphibrach in a sentence as a noun

Are you telling me that if you worked as a professional word rhymer for a year, ten years, fifty years, we wouldn't eventually start to hear the fatigue in your rendition of "there once was a man from Nantucket", even as you nail every last amphibrach with laserlike precision?

Amphibrach definitions

noun

a metrical unit with unstressed-stressed-unstressed syllables (e.g., `remember')