Historical clue formulations

• Some briefs — 2015-10-18
• Some men's underwear — 2015-04-27
• Some briefs — 2014-12-21
• Some undies — 2011-11-16
• Briefs, briefly — 2007-10-24
• Some underwear — 2005-07-24
• Briefs, briefly — 1998-12-31