Historical clue formulations

• "Kapow!" — 2025-04-22
• Explosive sound — 2020-12-06
• "Pow!" — 2020-01-04
• Exploding cigar sound — 2013-07-10
• Gunfight sound effect — 2012-06-29
• Noise in a comic book gunfight — 2010-12-29
• "Kapow!" — 2009-02-16