Related Clues:

• 'No kidding!'
• 'Really?'
• 'Oh, really?'
• 'Oh, yeah?'
• 'For real?'
• "No kidding!"
• ''Really?''
• 'Really?!'
• 'Are you serious?'
• "No kidding?"
• "Really?"
• Skeptical remark
• ''Oh, really?''
• 'Who'd a thunk it?!'
• 'No kidding?'