Dag is a term that can refer to a variety of subjects, but it is often associated with a character from Norse mythology. In this context, Dag is known as the god of day, representing daylight and the sun. He is the son of Nott, the goddess of night, and is often depicted as riding a horse that illuminates the sky. In modern usage, "dag" can also refer to a casual or informal term in some cultures, often used to describe a person who is endearingly awkward or silly. This usage highlights a friendly, approachable demeanor, making it a term of affection among friends.