noun. A keen hung-like-a-horse-detecting sense.
Related terms: gaydar, straightdar, bi-dar, hickdar, loserdar, boob-dar, penis-dar, hair-dar, porn-dar, sex-dar, food-dar, sleep-dar, money-dar, ho-dar, slut-dar, babe-dar, virgin-dar, hottie-dar, weirdo-dar, jerk-dar, moron-dar, dorkdar, skankdar, freak-dar, ass-dar, zombie-dar, Pretentious Club-going New York Assholedar, "someone is staring at my ass"-dar, “Jesus Freak” dar, jailbait-dar, fake-boob-dar, catdar, ratdar, dogdar, Christiandar, Catholicdar.
Real citation:"well i have big-dick-dar and no blip in your direction"
(mirtizzle, May 18, 2005, http://forum.gorillamask.net/archive/index.php/t-3148-p-5.html)
Made-up citation: "A porn director without big-dick-dar is like a fish sandwich without a fish. Ew."