Cách sử dụng
The expression "not a happy bunny" means that someone is feeling upset, disappointed or angry. It is usually used to describe a situation where someone is not happy with the way things are going. For example, if someone is waiting for a long time for something to happen, they might say "I'm not a happy bunny right now". This expression can be used in many different situations, but it is usually used in informal settings, such as with friends or family.