Historical clue formulations

• Polite announcements of one's presence — 2021-08-24
• Sounds of interruption — 2021-06-15
• Attention getters — 2018-07-01
• Throat-clearing sounds — 2017-05-01
• They may cut a sentence short — 2016-05-21
• Some conversation interruptions — 2016-03-06
• Some interruptions — 2014-04-03
• Sounds that make frogs disappear? — 2013-01-26
• Interruption causes — 2010-05-13
• Attention getters — 2009-05-24
• Cries for attention — 2006-01-13
• Cries for attention — 2005-02-05
• They're made in clearings — 2002-07-26
• Frog removers? — 2002-02-10
• Attention grabbers — 2000-02-13