Related Clues:

• "I give up!"
• ''Got me!''
• ''I'm stumped!''
• 'Haven't the foggiest'
• "Search me!"
• [Shrug]
• Slangy "Beats me!"
• 'Can't answer that'
• Shrugger's comment
• "I'm stumped!"
• "Search me"
• "Haven't the foggiest"
• ''No idea''
• ''I'm at a loss''
• "Ain't got a clue!"