As to the meaning of the line "Jockomo fi na ne", and other words from Iko Iko and Mardi Gras Indian chants, see posts in the Iko Iko thread whose link is provided in my 14 Oct 06 - 07:40 PM post.

One of those posts includes this comment by Guest Bob Bob Coltman, which was originally posted in Mudcat thread RE: Cajun Music, 17 Jan 06

"By the way, a "Jockamo" = a jester, jokester."

-snip-

Also, if interested, this page of my website http://www.cocojams.com/mardi_gras_indian_chants1.htm provides additional comments on the meaning of words & phrases that are found in Iko Iko and other Mardi Gras Indian chants.