Related Clues:

• 'No way that's gonna happen!'
• 'Balderdash!'
• 'Prove it!'
• “Yeah, that’s gonna happen!”
• ''Clueless'' exclamation
• ''Yeah, right!''
• Quaint oath
• ''Yeah, sure!''
• 'Puh-leeze!'
• ''Nonsense!''
• ''You wish!''
• ''Fiddlesticks!''
• Guaranteed
• Skeptic's remark
• But of course