What it means to smile?

Related questions

1. Can smiling make you feel happier?
2. What do the faces mean on SC?
3. Why your smile is beautiful?
4. What is a smile?
5. Does fake smiling make you happy?
6. Do white teeth make you more attractive?
7. Why is a smile contagious?
8. Why is yawning contagious?
9. Is it bad to smile too much?
10. Does smiling relieve stress?

Tags

1. #enjoyment
2. #universal
3. #others
4. #expression
5. #corners
6. #thing
7. #smile
8. #think
9. #mouth
10. #pleasure
11. #association
12. #happy
13. #turns
14. #message
15. #softens
16. #useful