Historical clue formulations

• Old-school rapper? — 2015-09-26
• Schoolmaster's rod — 2009-02-25
• Punishing rod — 2008-04-29
• Schoolmaster's child-punisher — 2004-05-28
• Schoolmarm's discipline dispenser — 2001-07-08
• Schoolmarm's rod — 2000-12-20
• Schoolmaster's rod — 1996-06-30