Historical clue formulations

• Zany behavior — 2026-03-26
• Escapade — 2026-01-22
• Shenanigan — 2026-01-09
• Ding-dong ditch, e.g. — 2025-08-24
• Shenanigan — 2025-02-10
• Stunt — 2024-06-25
• Shenanigan — 2022-09-22
• Like some face creams and serums, supposedly — 2022-07-28
• Shenanigan — 2022-07-03
• Bit of tomfoolery — 2021-10-03
• Caper — 2020-12-22
• Zany action — 2020-09-03
• Caper — 2020-06-21
• Caper — 2019-10-15
• Madcap — 2019-04-14
• Shenanigan — 2019-02-11
• Very silly — 2018-09-18
• Bit of a lark — 2018-07-11
• Silly prank — 2018-06-04
• Bit of clowning around — 2018-01-22
• Like Marx Brothers comedies — 2017-01-25
• Prank — 2016-10-18
• Shenanigan — 2016-05-16
• Shenanigan — 2016-04-08
• Bit of funny business — 2016-03-30
• Bit of tomfoolery — 2015-02-02
• Like much slapstick — 2014-10-03
• Three Stooges bit — 2014-09-09
• Like the Marx Brothers — 2014-07-27
• Shenanigan — 2013-12-11
• Prankster-like — 2012-10-28
• Bit of tomfoolery — 2012-07-10
• Bit of funny business — 2012-04-20
• Like Robin Williams, typically — 2012-01-03
• Caper — 2011-02-20
• Like 21-Across's behavior — 2011-02-12
• Caper — 2009-12-13
• Marx Brothers-like — 2009-05-12
• Bit of harlequinade — 2009-04-11
• Monkeyshine — 2009-03-26
• Shenanigan — 2008-11-17
• Shenanigan — 2008-06-09
• Bit of tomfoolery — 2007-09-16
• Caper — 2007-07-08
• Playful trick — 2007-06-25
• Ludicrous — 2006-10-26
• Prank — 2006-10-23
• Robin Williams-esque — 2006-09-03
• Bit of hijinks — 2006-08-22
• Bit of tomfoolery — 2006-07-30