Related Clues:

• On the 31st of February
• ''Not a chance!''
• 'No way, no how!'
• 'Not on your life!'
• 'When hell freezes over'
• Under no conditions
• Rebel yell
• Decisive refusal
• "The Twelfth of __"
• 'Ain't gonna happen!'
• 'Keep dreaming!'
• ''Not on your life!''
• 'In a pig's eye!'
• Defiant response
• "When donkeys fly!"