Related Clues:

• 'Ain't gonna happen'
• 'Sorry, Charlie!'
• Unequivocal refusal
• ''In your dreams!''
• Reconsider
• "Forget it!"
• ''Forget it!''
• ''Not at all,'' vernacularly
• Dismissive exclamation
• At all, slangily
• "In a pig's eye!"
• 'Impossible!'
• 'Yeah, that'll happen!'
• Not at all, in dialect
• With zero chance, informally