Related Clues:

• Emphatic refusal
• Emphatic turndown
• "When pigs fly!"
• "Not gonna happen"
• When pigs fly
• "Forget about it!"
• In no way
• Not even remotely
• Impossibly, informally
• ''When pigs fly!''
• 'Ain't gonna happen'
• Unequivocal refusal
• ''In your dreams!''
• ''Forget it!''
• ''Not at all,'' vernacularly