Related Clues:

• 'Nothing doing!'
• Distort
• 'Oh, sure!'
• 'Yeah, sure'
• Cry of disbelief
• Slangy denial
• Presuming that
• 'Uh-uh'
• 'Don't sweat it'
• 'Nope'
• 'Fat chance!'
• Rebuttal to 24-Across
• 'A likely story!'
• 'Oh, you wish!'
• Down-home turndown