Historical clue formulations

• Like ___ of worms — 2017-03-10
• Like ___ of corn (really easy) — 2016-06-17
• Open ___ of worms — 2013-07-29
• Open ___ of worms — 2013-03-18
• Open ___ of worms — 2012-01-16
• Open ___ of worms — 2011-04-27
• Open up ___ of worms — 2009-12-14
• Open ___ of worms — 2006-05-24
• "Do you have Prince Albert in ___?" — 2003-11-02
• Open ___ of worms — 2003-06-27
• Open ___ of worms — 2003-06-08
• Open ___ of worms — 2002-02-27