Related Clues:

• Distort
• 'Oh, sure!'
• 'Yeah, sure'
• At all
• 'Nah!'
• Slangy denial
• 'Can't do it'
• Presuming that
• 'Uh-uh'
• 'Don't sweat it'
• 'Nope'
• 'No sirree'
• 'Fat chance!'
• Rebuttal to 24-Across
• 'A likely story!'