Pirogue is two syllables only, it is Creole French, from the Spanish piragua, Carib piraua.

The words are in the DT

Also see thread 19615: Jambolaya
Some information, but also garbage in that thread. The song is mock Cajun, although Williams had some knowledge of the bayou country of Louisiana.

Words by Hank Williams, revised from music originally for the piano, by Eugenie Ricau Rocherolle, a graduate of Tulane University, and a native of New Orleans who now lives in Connecticut.

If you know nothing of Cajun music or culture, perhaps you should not try to sing it in public.