Nope, not Gullah/Geechee. Here's what the luverly Neville folks have to say:

"The song was originally called 'Jockamo,' and it has a lot of Creole patois in it. Jockamo means 'jester' in the old myth. It is Mardi Gras music, and the Shaweez was one of many Mardi Gras groups who dressed up in far out Indian costumes and came on as Indian tribes. The tribes used to hang out on Claiborne Avenue and used to get juiced up there getting ready to perform and 'second line' in their own special style during Mardi Gras. That's dead and gone because there's a freeway where those grounds used to be. The tribes were like social clubs who lived all year for Mardi Gras, getting their costumes together. Many of them were musicians, gamblers, hustlers and pimps."

More as found, ~J