Related Clues:

• Reaction to pyrotechnics
• "La la" lead-in
• Sound of admiration
• "Wonderful!"
• Piercing cry?
• Excited reaction
• Audible reaction to a punch
• Kin of ''Wow!''
• Word of amazement
• "Impressive!"
• Awed remark
• Pleased cry
• Punch line
• [That punch hurt!]
• Socked-in-the-gut sound