I understand were your coming from hollowmoon - not concerning the part in which people ask you why your not smiling though, but concerning the fact that you don't smile much, me neither, when i'm alone that is. When i'm with people i become bubbly and smiling (so long as i'm comfortable with them and know them well enough), and on occasion i do smile at strangers i walk by on the street, though it feels extremely weird, regardless that i know i do it just randomly and to be nice. But in general when i walk about, i don't smile, i guess you can say i have a blank expression when i walk, though sometimes i find myself thinking, what if i just think i appear to others to walk about with this innocent looking blank expression, but in reality my face wears a expression that says "This person is ticked off, keep at distance", and then sometimes i mentally panic with this theory in mind, because that's not how i am as a person nor how i want to be perceived by other, so then i sometimes try force out a cheerful smile/ attitude instead, and suddenly you get to the part were you think, omg what this doesn't look like normal smiling, and in actuality my shot at being more smiley comes through like this:
![Image](http://i.imgur.com/FXV2re7.jpg)