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The time that elapses from the time one says 'yolo' in a non-ironic fashion to the time they realize whatever they are doing was probably not the greatest idea. Usually accompanied by a gung-ho attitude while getting a neck tattoo or chugging four Jager Bombs. During the yolo window, one is often either inebriated or just in a state of poor critical thinking, and it's unwise to make big decisions during this time, but it usually happens anyway.
'He thought he could win the pie eating contest. That yolo window closed after about 90 seconds.'

'Don't talk to Mikey about his ex right now. He's been drinking Jame-O straight all night and he's still in the yolo window.'
by Fox Islander November 05, 2015
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