I smile when I'm happy.
  Most people would.
But,
I also smile when I'm sad.
"Why of all silly things did this happen?"
When I'm embarrassed.
"Oh God, everybody's laughing. Okay, just laugh with them. Haha."
When I'm angry.
"You don't know what's gonna happen to you, *****."
When I feel lonely.
"Where are people when I actually need them?"
When I just don't know what to do in life.
I smile a lot.
So I don't think people could tell.
I'm not one to express something in the right way.