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Similar in nature to a Mexican Minute, it indicates a lack of urgency or a tendency to show up at ones own leisure, with little regard for others time.
Nick arranged a game of FIFA to start at 9:35pm, however didn't show up untl 9:50. The length of time that passed before he showed up is a McIlwain Minute.
by Scottiro May 05, 2010
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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2
A period of time falling between a Mexican Minute (about 5 minutes) and a Jones Minute (about half an hour).
Nick came up with the idea of meeting at the bar at 6:45, but he was a McIlwain Minute late, even though he lived a minute away.
by TenaciousDenny May 06, 2010
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