When you're on skype with your friends and your dad starts yelling at you and is vacuuming at the same time.
When everyone in your family is in a bad mood
When you walk into class half an hour late
When you try to pay for hosa and the advisor starts yelling at you
When you're at piano lessons and you have to sight-read part of a piece you were supposed to have looked at
- Pretty much sums up my day.