Historical clue formulations

• Groan-worthy, say, as a joke — 2025-11-29
• Like groaner humor — 2017-10-18
• Like groaners — 2016-05-29
• Not subtle, as humor — 2013-12-25
• Unsophisticated, as humor — 2008-11-11
• Hardly sophisticated — 2003-10-05
• Groan-inducing, perhaps — 2003-07-20
• Vaudevillian, in a way — 1998-10-10
• Hokey — 1997-10-08
• Like "Hee Haw" humor — 1994-01-05