Related Clues:

• Doubter's words
• Start of a speculative comment
• "Yeah, sure, sure"
• ''Fat chance!''
• "Oh, suuure"
• "Unlikely!"
• "Not likely!"
• 'Ain't gonna happen!'
• 'Horsefeathers!'
• '-- I didn't know'
• Doubter's reply
• 'The hell you say!'
• Skeptic's challenge
• ''Oh, you wish!''
• ''I'll bet!''