1. Loud people.
2. People who have an opinion on everything.
3. People who don't do any work during group work.
4. Homework.
5. The upgrade times (at later levels) in clash of clans.
6. When it's cold but there is no snow.
7. Boring presentations.
8. Art and poetry.
9. Chores.
10. Loud, sudden noises.
11. When people try to be optimistic when there is zero hope.