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1.
(BY-dar) An intuitive sense that enables someone to identify another person is bisexual. Simular to gaydar.
Sensing someone's bisexuality purely through thier physical appearance is nearly impossible, thus a person with bidar is hard to find.
by OneBadAsp October 28, 2006
 
2.
The sixth sense, that most bisexuals have, that acts like radar and can detect another bisexual from across a crowded room.
Sasha felt so out of place at her cousin's birthday party because it was filled with nothing but couples. Then, all of a sudden, her bi-dar went off and she saw a cute, uncoupled person walking her way. (Maybe this party wouldn't be so bad after all!)
by kittykat85 February 03, 2010