Related Clues:

• "Not on your life!"
• Defiant cry
• Impossibly, informally
• ''When pigs fly!''
• 'Not a chance'
• ''I don't think so!''
• When pigs whistle
• 'Not in a million years!'
• Not in a million years
• Emphatic negative
• Not even once
• 'Ain't gonna happen'
• ''As if!''
• Unequivocal refusal
• ''In your dreams!''