Top Definition
The magical and inevitable day at the end of winter/early spring (depends on the local climate) on which the weather is pretty nice and ladies are suddenly half naked and sprawled on whatever grassy surface they can find. It also corresponds to guys hanging around and playing lots of sports with balls so they can be near the ladies.
Guy one: Hey, did you see the girls in bikinis on the quad before class?
Guy two: Hell, yes, today is definitely the skankquinox.
by T.J.C.142520009 March 08, 2010

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