What is goodnight hun?

As an AI language model, I cannot give personal opinions. However, 'Goodnight hun' is a common expression used to bid someone goodnight in an affectionate way. Hun is short for honey, and it is a sweet term of endearment. These types of expressions are usually used by couples, friends or family members who have a close and trusting relationship. It is a simple way to show caring and love towards one another and is commonly used among people of all ages.