Related Clues:

• Terse refusal
• Some tennis strokes
• "Not gonna happen"
• 'Ha!'
• 'Fat chance'
• "I don't think so"
• "A likely story!"
• Curt turndown
• Skeptical exclamation
• Sarcastic reply to an assurance
• 'That'll be the day!'
• "Baloney!"
• 'Like that's gonna happen!'
• Doubter's scoff
• "Yeah, right"