Related Clues:

• Cry of derision
• "Yeah, right!"
• Terse refusal
• 'Like that would ever happen!'
• "Like that would happen!"
• "When pigs fly!"
• 'Pshaw!'
• "Not gonna happen"
• Half a laugh
• Not in a month of Sundays
• Teen's catchphrase
• "So there!"
• "A likely story!"
• 'Get real!'
• 'Absolutely not!'