Dwight Schrute: Ever since Michael dumped Jan for Carol, Jan's been bitching out on him. Reject a woman and she will never let it go. One of the many defects of their kind. Also, weak arms.
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Jan: How would a movie increase productivity, Michael? How on earth would it do that?
Michael Scott: People work faster after.
Jan: Magically.
Michael Scott: No. They have to, to make up for the time they lost watching the movie.