English

Noun

cray-dar ‎(uncountable)

1. (slang) The ability to detect whether or not a person is crazy.
   • 2012, Catherine Alvarez-McCurdy, "Halloween Costumes: Least To Most Fuckable", The Chicago Shady Dealer (humor magazine of The University of Chicago), Volume 9, Issue 2, 5 November 2012, page 3:

     Someone who likes whips and bondage just as much as you will probably be at the party too; I’m sure your cray-dar will start beeping soon.

   • 2013, "Zodiac", The Valley Beat, Issue 160, 9 October 2013, page 26:

     Turn on your “cray-dar,” Aquarius. While you love an eccentric individual, this week you could magnetize people who are truly off their rockers.

   • 2015, Sharon Saracino, Smitten with Death, The Wild Rose Press (2015), ISBN 9781628308235, unnumbered page:

     […] You put him right in the crosshairs of my mother's cray-dar, and I suspect he'll be keeping a very low profile for a while.”