Historical clue formulations

• Sit (down) heavily — 2026-07-30
• Sit (down) heavily — 2026-06-23
• Sound of a stone landing in a pool — 2026-04-09
• Take a seat unceremoniously, with "down" — 2025-07-01
• Sound preceding a ripple — 2024-12-14
• Frog-hopping-into-water sound — 2024-06-23
• Sit down ungracefully — 2023-07-20
• Undesirable sound at a stone-skipping contest — 2023-05-13
• Sound of an unsuccessful attempt at stone skimming — 2022-07-29
• Sound of sitting down heavily — 2021-06-28
• Sit (down) heavily — 2021-02-10
• Make a splash — 2020-11-27
• Sound preceding a ripple — 2017-11-08
• Sit (down) hard — 2017-06-19
• Alka-Seltzer sound — 2017-06-05
• Sit (down) heavily — 2016-09-23
• Fall heavily — 2016-05-21
• Tiny splash — 2013-04-04
• Sound associated with ripples — 2011-11-25
• Alka-Seltzer-into-water sound — 2009-01-06
• ... a person sitting down — 2008-12-02
• Sit heavily — 2008-03-20
• Raindrop sound — 2004-09-13
• Sit (down) — 2004-06-27
• Raindrop sound — 2004-03-08
• Sit (down) — 2003-03-06
• When repeated, start of an old antacid jingle — 2003-02-02
• Sit (down) — 2001-07-22
• Fall sound — 2001-02-02
• Alka-Seltzer sound — 2000-10-16
• Sit (down) — 2000-08-15
• Alka-Seltzer jingle starter — 2000-07-25
• Sitting sound — 1999-11-03
• Make a splash — 1999-07-04
• Kerplunk — 1998-10-30
• Raindrop sound — 1998-09-01
• Sit (down) — 1998-08-08
• Word in an Alka-Seltzer ad — 1998-05-13
• Alka-Seltzer sound — 1996-12-16
• Raindrop's fall — 1996-01-26
• Sitting-down sound — 1995-03-05
• Sit (down) — 1994-04-27