IMEANIT

Every clue on record, most used first

• "This is no joke!"3 times

  The New York Times — Friday, 2 November 2007

• "For real!"2 times

  The New York Times — Saturday, 9 January 2010

• "Seriously!"2 times

  The New York Times — Friday, 1 December 2006

• "This is serious!"2 times

  The New York Times — Sunday, 19 September 2004

• "Honest!"once

  The New York Times — Sunday, 30 May 2010

• Follow-up to a parent's command, maybeonce

  The New York Times — Thursday, 8 October 2009

• No-nonsense cryonce

  The New York Times — Saturday, 25 August 2007

• "This isn't a joke"once

  The New York Times — Sunday, 26 September 2004

• "You should listen to me"once

  The New York Times — Friday, 24 January 2003

• "No kidding!"once

  The New York Times — Friday, 27 December 2002

• "No kidding"once

  The New York Times — Thursday, 1 August 2002

• "Don't play with me!"once

  The New York Times — Saturday, 5 July 1997