Historical clue formulations

• Not the brightest bulbs, so to speak — 2026-04-21
• "Complete ___ Guides" (how-to series) — 2025-08-11
• Yo-yos — 2024-10-25
• Dummies — 2024-09-16
• Dim bulbs — 2020-02-11
• Dolts — 2017-08-21
• "The Complete ___ Guide to ..." (popular book series) — 2017-08-17
• Boobs — 2016-08-26
• Nuts — 2015-02-27
• Dunces — 2014-05-20
• Imbeciles — 2013-11-04
• Mad magazine's Usual Gang of ___ — 2013-04-10
• Imbeciles — 2009-04-20
• Numbskulls — 2008-09-23
• Other drivers (never you, of course) — 2007-11-10
• They're thick — 2007-08-25
• Putdown of those with whom one disagrees — 2004-11-21
• Numbskulls — 2001-11-07
• Cementheads — 2000-02-15
• Fools — 1999-04-25
• Sherwood's "___ Delight" — 1999-01-22
• ___ delight (solitaire game) — 1998-04-09
• Rocket scientists they're not — 1996-11-09