Situations in which one should not pick their nose:

1. In class.
2. At a party.
3. On a date.
4. In a hallway with a bunch of doors that cannot be determined to be opened or closed nor containing people looking out of said doors.
5. During the birth of ones child.
6. While driving in the snow.
7. While cuddling with ones partner.
8. During any social gathering.
9. While giving a speech.
10. While on stage at all (unless demanded by the playwright).
11. While doing something else embarrassing that would cause people to look at you.
12. On Skype EVEN IF they've told you that your screen has frozen.
13. While cooking.
14. Etc.