Historical clue formulations

• Boast in a 1987 Michael Jackson hit — 2024-11-30
• Repeated lyric in a 1987 Michael Jackson #1 hit — 2019-10-08
• Repeated boast in a 1987 #1 hit — 2017-04-21
• 1987 declaration from Michael Jackson — 2015-12-01
• Repeated Michael Jackson lyric in a 1987 hit — 2012-11-13
• "That was devilish of me" — 2006-01-19
• Comment from a tough guy — 2005-02-12
• Michael Jackson's 1987 boast — 2005-01-09
• Michael Jackson boast, in a 1987 hit — 1998-04-20