Related Clues:

• "Yeah, right!"
• "When pigs fly!"
• 'Pshaw!'
• "Not gonna happen"
• Half a laugh
• Not in a month of Sundays
• "So there!"
• "A likely story!"
• When pigs fly
• Skeptical exclamation
• "Not a chance!"
• "That'll show 'em!"
• 'That'll be the day!'
• "Told you so!"
• "In your dreams!"