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Large groups of individuals that hang out together on weekday (Workday) nights at late hours. They can either be a group of friends in a strange place on weekday evenings or several driving together in a planned pattern maybe themselves seem "Professional"
Person 1 - "Hey look at all those people, why are they out here on a wednesday night?"

Person 2 - "They are professional friends, that's why!"
by Tigrez May 27, 2009
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