Historical clue formulations

• Complaint, informally — 2026-05-05
• Basis for a feud — 2024-09-22
• Strengthen, with "up" — 2024-09-11
• Grouse — 2023-07-16
• Meat in a burger — 2022-05-30
• Bone to pick — 2021-04-23
• Bellyache — 2020-10-21
• Complaint — 2020-02-13
• Argument — 2019-05-31
• Major Argentine export — 2019-03-17
• Meat in a burger — 2018-11-12
• Bit of food ... or feud? — 2017-12-17
• Grievance — 2017-02-03
• Gripe — 2016-11-24
• Bellyache — 2016-03-27
• Complaint — 2014-09-17
• Gripe — 2014-07-30
• Kobe ___ — 2013-03-21
• Hamburger meat — 2010-05-17
• Bellyache — 2008-07-13
• Bone to pick — 2007-03-21
• Kick — 2007-01-28
• Bone to pick — 2005-09-14
• Steak or ground round — 2005-06-06
• Grouse — 2004-03-14
• Complaint — 2002-10-09
• Burrito filler — 2001-06-26
• Carpaccio base — 2000-10-26
• Grievance — 2000-03-23
• Kick — 2000-03-05
• Complaint — 2000-02-29
• Protest — 1999-12-02
• Complaint — 1999-02-24
• Complain — 1995-04-09
• Filling for a taco — 1993-12-12