whistle Dixie

Refers to the song "Dixie", the traditional anthem of the Confederate States of America. The full implication is that the Confederacy would not succeed in the American Civil War through sentiment or token action alone.

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whistle Dixie (third-person singular simple present whistles Dixie, present participle whistling Dixie, simple past and past participle whistled Dixie)

1. (idiomatic, Southern US) To engage in idle conversational fantasies.

   He said he was going to open a business next year, but I think he was just whistling Dixie.

   "Sure is hot!" / "You ain't whistlin' Dixie!

• Frequently used in the negative, to mean someone or something is serious, as in, When I say that, I'm not just whistling Dixie, I really mean it.

• engage in idle conversation, often including fantasies
  • bullshit (verb)
  • shoot the breeze
  • shoot the shit
  • build castles in the air
• 'whistle' idioms
  • whistle down the wind
  • whistle in the dark
  • whistle in the wind
  • whistle past the graveyard