Related Clues:

• ''Not very likely!''
• "Get real!"
• 'Says who?'
• "Ri-i-ight"
• "Suuure ..."
• ''Yea, right!''
• Skeptic's comeback
• 'Unlikely'
• "Not gonna happen!"
• 'Uh-huh, sure it is'
• Doubter's comment
• Sarcastic ''Sure!''
• "Doubtful"
• 'I don't think so!'
• ''Oh yeah?''