Citations:bidar

Noun: "(slang) the ability to detect whether or not a person is bisexual by observing that person"

 * 2006, Nicole Krista & Mike Szymanski, The Bisexual's Guide to the Universe: Quips, Tips, and Lists for Those Who Go Both Ways, Alyson Books (2006), ISBN 9781555836504, page 131:
 * Bi people hang in straight places a lot, and given that you are also bi, they will probably stand out to you in an indescribable, nonverbal way. And that, my friend, is bidar.
 * 2011, Jess C. Scott, Catholic School Girls Rule, JessINK (2011), unnumbered page:
 * She didn't know that Brett and Marc had pretty good bidars too—bidars being a combination of 'bisexual' and 'radar', to refer to the purported intuitive or sensing ability to identify other bisexuals
 * 2012, Matt Posner & Jess C. Scott, Teen Guide to Sex and Relationships, jessINK (2012), unnumbered page:
 * If you're observant and intuitive, you might be able to pick up that a person is more attracted to and “into” their own gender (some people call his [sic] an internal gaydar or bidar that can detect if a person is gay or bisexual).
 * 2013, Shiri Eisner, Bi: Notes for a Bisexual Revolution, Seal Press (2013), ISBN 9781580054751, unnumbered page:
 * Of course, not all bisexuals are recognizable, and many will easily defy the bidar, whereas others will appear to be bisexuals without actually identifying as bi.
 * Bi people hang in straight places a lot, and given that you are also bi, they will probably stand out to you in an indescribable, nonverbal way. And that, my friend, is bidar.
 * 2011, Jess C. Scott, Catholic School Girls Rule, JessINK (2011), unnumbered page:
 * She didn't know that Brett and Marc had pretty good bidars too—bidars being a combination of 'bisexual' and 'radar', to refer to the purported intuitive or sensing ability to identify other bisexuals
 * 2012, Matt Posner & Jess C. Scott, Teen Guide to Sex and Relationships, jessINK (2012), unnumbered page:
 * If you're observant and intuitive, you might be able to pick up that a person is more attracted to and “into” their own gender (some people call his [sic] an internal gaydar or bidar that can detect if a person is gay or bisexual).
 * 2013, Shiri Eisner, Bi: Notes for a Bisexual Revolution, Seal Press (2013), ISBN 9781580054751, unnumbered page:
 * Of course, not all bisexuals are recognizable, and many will easily defy the bidar, whereas others will appear to be bisexuals without actually identifying as bi.