My grandma and your grandma
Were sittin' by the fire
My grandma told your grandma
I'm gonna set your flag on fire

Talkin' 'bout: Hey now! Hey now!
Iko, Iko, unday
Jockamo feeno ai nané
Jockamo fee nané

Sometimes known as Jockamo instead, this song was best known as it was performed by the Grateful Dead, it was covered by the Belle Stars for the soundtrack to the (excellent) movie "Rain Man" in 1988. The Dead were rather strong fans of zydeco, it would seem.