Related Clues:

• 'I have no idea!'
• Expression of bafflement
• Former U.S. Open champ Chris's answer to 'Who'll be tops this year?'
• Puzzled response
• -
• "How should I know?"
• [   ]
• 'No clue'
• Comment made with a shrug
• 'I haven't the foggiest'
• Confused response
• 'No idea'
• 'Who knows?!'
• ''How should I know?''
• 'Hell if I know'