Related Clues:

• “Holy cow!”
• "No fooling!"
• ''Hmm, I don't know''
• ''I hadn't thought of that''
• '-- whiz!'
• Grand opening?
• "I didn't know that!"
• Wally's exclamation
• "Aw, heck!"
• Naive expression of wonder
• "My stars!"
• ''Oh, boy!''
• ''That's incredible!''
• "Golly"
• 'Huh!'