be whistling Dixie

be whistling Dixie

  (American informal)
to talk in a way that makes things seem better than they really are (usually negative) We're really making money these days and I'm not just whistling Dixie.
See also: Dixie, whistle
References in periodicals archive ?
You'll be whistling Dixie when you sink your teeth into a spice cake topped with meringue, a Southern specialty.