Related Clues:

• 'Nuts!'
• 'Uh-huh'
• 'Gotcha!'
• 'Yeah, right!'
• 'Phooey!'
• 'I knew it!'
• 'Get outta here!'
• Cynic's retort
• 'Oh, right!'
• 'When pigs fly!'
• 'That'll show you!'
• 'Fiddlesticks!'
• 'Don't think so'
• 'I doubt that!'
• 'Shucks!'