Related Clues:

• 'I'm drawing a blank'
• "I'm drawing a blank"
• 'Haven't the foggiest!'
• 'Wish I knew'
• "Wish I knew"
• “I’m drawing a blank”
• “Beats me!”
• Phrase represented online as ¯\_(''/)_/¯
• “I dunno”
• *shrug*
• 'Not a clue'
• 'I'm clueless'
• 'I'm baffled'
• "Capisce?"
• "Got me!"