Related Clues:

• Response to a dubious assertion
• ''Really?''
• 'What time --?'
• '-- soup yet?'
• 'On what authority?'
• 'Who --?'
• "___ in you?" (37-down slogan)
• ''___ soup yet?''
• '… or ___ just me?'
• "No kidding?"
• "Really?"
• "You don't say"
• ''According to what authority?''
• "What ___ now?"
• Start of a ''Superman'' query