Historical clue formulations

• "Really! Check for yourself!" — 2025-02-23
• "For real!" — 2023-12-29
• "Honest to goodness!" — 2008-11-20
• "No kidding!" — 2006-07-27
• "For real!" — 2006-05-12
• "No kidding!" — 2002-02-23
• "No kidding" — 1999-07-24