Historical clue formulations

• "Truer words were never spoken!" — 2022-05-13
• "You said it!" — 2020-09-22
• "Preach!" — 2020-07-31
• Words of agreement — 2020-04-11
• "I couldn't agree more!" — 2018-09-02
• "So true!" — 2018-06-04
• ... OMEN OPEN OPED SPED SHED SHAD SHAM WHAM WHAT ... — 2017-02-22
• "You said it!" — 2011-10-15
• Response of approval — 2010-05-01
• "I hear ya!" — 2007-10-13