How to Convey Dominance While Smiling
by Elizabeth Yuko from Lifehacker on (#5W2X5)

I never smile if I can help it," Dunder Mifflin Assistant (to the) Regional Manager Dwight Schrute tells the camera in an episode of The Office. Showing one's teeth is a submission signal in primates. When someone smiles at me, all I see is a chimpanzee begging for its life."