Historical clue formulations

• Brit's oath — 2011-12-25
• Brit's oath — 2009-10-28
• Brit's oath — 2008-12-07
• Brit's exclamation — 2004-06-13
• Brit's oath — 2000-11-04
• Gosh, British-style — 1996-12-28
• "By _____!" (minced oath) — 1994-07-10