Related Clues:

• "Not a chance!"
• "Forget about it!"
• Private's refusal
• Private reply
• "Get out of town!"
• "In your dreams!"
• Military response, sometimes
• G.I.'s reply
• Polite answer
• Never!
• "Fat chance!"
• "Impossible!" and the theme of this puzzle
• Polite denial
• "You gotta be kidding!"
• "I don't think so!"