It is impossible to determine a person's temper with a cup of coffee as an avatar, because the choice of avatar may vary from person to person and cannot directly reflect a person's personality or temper. However, coffee, as a common beverage, is usually associated with leisure, relaxation and pleasant atmosphere. Therefore, a person may choose a cup of coffee as an avatar to express his feelings of enjoying life, having a good taste, or being in a relaxed and comfortable environment.

However, this is only one possible explanation. Everyone's choice is personalized, and it is not easy to attribute a specific temper to a specific coffee cup portrait.