Historical clue formulations

• Bonkers — 2026-09-23
• Bonkers — 2021-03-02
• Cockamamie — 2012-01-29
• Bats — 2011-05-25
• Crackers — 2004-09-02
• Bonkers — 2004-08-10
• Nuts — 2001-06-09
• Not all there — 2000-04-16
• Bats — 1998-03-01
• Off one's rocker — 1996-11-25
• Bonkers — 1995-02-06
• Bonkers — 1994-03-13