Translate y'all ain't got to cowtail to a lot of this stuff into more formal saying?

This phrase does not translate - are you certain that you heard it correctly? I can translate the individual slang for you:

Y'all - US Southern slang for "you all" meaning the plural of "you"

Gotta - "Got to" meaning to have to (do something)

Cowtail - can either mean the last one (the tail end) or the frayed end of an old rope

Stuff - various things, items, or situations for which the speaker has no concrete name

Do you think the person might have said "y'all ain't gotta KOWTOW"? To Kowtow is to bow down subserviently - it is a Japanese term.

Another person... I read the book roll of thunder hear my cry... THEY READ IT RIGHT!