What is what does it mean when someone calls you fine af?

When someone says that you are "fine af," they are typically giving you a strong compliment about your appearance or overall attractiveness. The term "fine" is slang for very good-looking or attractive, and "af" is an abbreviation for "as f***," which is used to emphasize the intensity of the compliment. It's a casual, informal way of expressing admiration, usually in a positive and flattering manner. However, be mindful of the context and the relationship you have with the person, as this phrase is quite informal and could be considered inappropriate in certain settings.