Historical clue formulations

• "For real!" — 2026-09-25
• "No joke!" — 2024-02-26
• "No, seriously" — 2013-04-29
• "Seriously!" — 2011-04-22
• "Really!" — 2006-04-14
• "It's true!" — 2003-11-21
• "Yes!" — 1998-01-26