Related Clues:

• "Color me surprised!"
• With 64-Down and 64-Down, Fat Albert's catchphrase
• "Hmm, I didn't know that!"
• Head scratcher's remark
• "No kidding"
• "I don't know" lead-in
• Oral objection
• ''Watch it, buddy!''
• Turn signal, on a horse
• "___-whiz!"
• 'No kiddin'!'
• "___ Jude" (Beatles)
• ___ you!
• "Who knew?"
• 'Didn't know that!'