Related Clues:

• Mathematician's query?
• 'Why'd you do that?!'
• 'How could that be?'
• 'Something's not right here ...'
• Explanation request
• 'Seriously?'
• Words said in disbelief
• "How come?"
• 'Can you explain this?'
• Fixer's query
• "Seriously?"
• 'Is there a problem here?'
• "Is there a problem here?"
• *'Anything wrong?'