Related Clues:

• 'Haven't the foggiest'
• "Search me!"
• [Shrug]
• Slangy "Beats me!"
• "I'm stumped"
• Comment from the clueless
• 'Can't answer that'
• "I'm stumped!"
• "Got me"
• 'You got me there'
• ''Beats me''
• "Search me"
• "Haven't the foggiest"
• 'Heck if I know'
• ''No idea''