Related Clues:

• Head scratcher's remark
• "No kidding"
• "I don't know" lead-in
• Turn signal, on a horse
• "___-whiz!"
• 'Well, what do you know!'
• 'No kiddin'!'
• "Who knew?"
• 'Didn't know that!'
• Haw's mate
• Command to 62-Down
• ___-whiz
• "Oh, wow!"
• "I'd have never guessed!"
• 'That's interesting!'