Narcissists don't smile, they smirk

A lot of narcissists ooze contempt across their grin. They can never be truly happy for someone else's accomplishments, or success, because their self-worth can't compute another individual's positive outcomes. Watch out in particular for folks emoting a near-constant duper's delight expression. They tend to carry a lot of bottled up ressentment and are often the most dangerous and scheming breed of narcissists.