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whistle Dixie
whistle Dixie
Engage in unrealistic, hopeful fantasizing, as in If you think you can drive there in two hours, you're whistling Dixie. This idiom alludes to the song "Dixie" and the vain hope that the Confederacy, known as Dixie, would win the Civil War.
whistle Dixie
Slang To engage in unrealistically rosy fantasizing: "If you think mass transportation is going to replace the automobile I think you're whistling Dixie" (Henry Ford II).