Facial Expressions

Facial expressions can tell u alot about da way dat a person is feeling at da moment. But it also can be a 'front'. When i smile does it mean dat i'm content? Or does it mean dat i'm doing it for your sake? When i frown does it mean dat i'm sad? Or does it mean dat i want you to be sad for me? So when people say dat they can tell you how you are feeling from da look of your face, well, to me it's all b*ll shit..=) (doesn't it sound true?) Dont tell me dat i look happy or sad or silly because....hey! it could just be my face...!