noun. A keen, wanker-detecting sense, honed by years of living in West Wankistan (a.k.a. Earth).
Related terms: sexual-geniusdar, weirdo-dar, someone-is-staring-at-my-ass-dar, zombie-dar, camel toe-dar, dogdar, creepydar.
Real citation: "whoops my wankerdar is going off."
(July 19, 2006, Guitar Zone Forum, http://www.guitarzone.com/forum/lofiversion/index.php/t163522.html)
Made-up citation: "Wankerdar is a handy superpower when dealing with the human species, but I'd prefer a heightened sense of dog-crap-dar, for the sake of decency and my shoes."