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When a woman becomes more attractive to males because she does something bad or does something illegal.
"I always thought Winona Ryder was hot but when she got caught shoplifting she became super hot, you gotta love a bad girl!"

"Bro, I never really noticed that girl Amy from our office but then I found out she got busted for weed last weekend, I gotta have me a slice of that, that's the Winona Effect right there bro".
by Dazzman April 16, 2014
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