Historical clue formulations

• What a punch line may end — 2025-12-29
• "A guy walks into a bar …" may start one — 2023-01-09
• A shaggy dog story is a long one — 2022-11-30
• "Is this some kind of twisted ___?" — 2022-09-06
• "Practical" thing — 2022-08-24
• Cause of a laugh — 2022-05-09
• "What a ___!" — 2020-09-03
• Ha-ha — 2019-11-08
• Complete embarrassment — 2018-02-02
• *Bit of blue humor — 2017-06-15
• Ha-ha elicitor — 2016-07-11
• Ridiculously inadequate sort — 2016-06-09
• Laughing matter — 2016-03-16
• Rib-tickler — 2015-08-31
• One-liner, e.g. — 2015-05-24
• One might start "Knock knock ..." — 2015-03-23
• It's bad when nobody gets it — 2013-11-02
• Routine part — 2012-12-07
• Part of a routine — 2012-03-16
• A good one is cracked — 2011-11-03
• One may be running over time — 2010-12-30
• Toastmaster's offering — 2009-02-26
• Cause for winking — 2009-01-03
• It may start with someone entering a bar — 2007-04-22
• It's best when cracked — 2006-05-02
• Word that may follow the start of 20-, 25-, 44- or 50-Across — 2005-08-02
• Friars Club offering — 2005-06-15
• Wisecrack — 2004-10-04
• It may begin with a buildup — 2003-12-31
• Funny — 2002-01-12
• One-liner, e.g. — 2000-04-04
• Crack — 1997-11-29
• Speechmaker's opening — 1997-09-30
• One-liner — 1994-11-29