Related Clues:

• 'I told you so!'
• 'And pigs fly!'
• 'Over my dead body!'
• See 35-Across
• 'Fat chance!'
• 'A likely story!'
• 'That'll show 'em!'
• When hell freezes over
• 'Baloney!'
• Flightless birds
• 'Good one!'
• Defiant reply
• 'Fuhgeddaboudit!'
• Cry of defiance
• Emphatic no