Jim, are you sure? I added the "no" but even IMDB, my favorite source for authentic movie information says: Prissy: Lawzy, we got to have a doctor. I don't know nothin' 'bout birthin' babies.
Grammar GeekJim, are you sure?
CJ
I definitely added (incorrectly) the "no."
"I haven't got the foggiest idea"? Is it used?
Yes, it is. Often as "I haven't got the foggiest" (with the "idea" part understood).
I haven't got the faintest idea.