Top definition
a radar that girls and homosexual guys have that goes off when ever they sence a hot guy is near by
Girl 1: WOOO WOOO BOYDAR!!!! i smell a hottie on a skateboard!!!
Girl 2: Oooo good catch, hes a deffinant SWING!!
by Cardeezy March 08, 2006
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2
A sense that a person is a ftm trans person.
Person: that guy doesn’t seem like a cis girl. They’re activating my boy-dar
by Iiiimgay October 02, 2019
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