"Chimpanzees sometimes smile not for pleasure or for a social bond, but for power. A dominant chimpanzee will grin and show its teeth. Dr. Niedenthal argues that humans flash a power grin as well -- often raising their chin so as to look down at others. 'You're an idiot, I'm better than you'--that's what we mean by a dominant smile,' said Dr. Niedenthal."
SMILE - it's the safest way to spread your cheeks!
I was wondering if I'd be the only person to notice that!
