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A brief period of time, usually on the weekends after last call, when a person is drunk and horny and is willing to lower their standards to have sex.
"My slut window is wide open, I'll sleep with the next person who hits on me."

"I was home and still drunk at 2am so I told myself I would invite over the next person who messaged me on OkCupid."

"The only time I use Tinder is during my slut window."
by pmizzle February 27, 2014
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