Related Clues:

• Sound of laughter
• 'Well, I ___!'
• 'Nothing doing!'
• 'Oh, sure!'
• Cry of disbelief
• 'I told you so!'
• 'And pigs fly!'
• 'Over my dead body!'
• 'Fat chance!'
• 'A likely story!'
• 'That'll show 'em!'
• 'I don't believe it!'
• When hell freezes over
• 'Baloney!'
• 'Good one!'