Cop Doughnut Joke

Some days the jokes write themselves: Boston police locked down the entire city, except for Dunkin' Donuts so that the police could get their doughnuts and coffee. Insert laugh track here.

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Also, via Wikipedia citing the Catholic Encyclopedia, Saint Duncan of Doughnut was a real person: Dúnchad mac Cinn Fáelad (also called Dunichad, Duncad, and Donatus)