Historical clue formulations

• Backside — 2026-07-21
• Tush — 2020-01-12
• Caboose — 2019-03-10
• Tush — 2018-05-20
• Keister — 2017-11-20
• Tushy — 2017-03-26
• Tush — 2016-05-29
• Rear — 2011-05-03
• Bum — 2008-08-30
• Bum — 2007-03-28
• Rear — 2004-04-11
• Bottom, slangily — 2004-03-18
• Something to fall back on? — 2003-06-01
• Tush — 2002-05-15
• Rear, informally — 1995-05-28