What is when someone calls you doll?

When someone calls you "doll," it is a slang term of endearment that's often used as a pet name. It is mostly used in a friendly and playful manner, though it can also be used in a romantic or flirtatious way. The term originated in the 1920s, during the height of the flapper era, and was popularized in movies and songs of that time. Nowadays, it is still used in casual conversation, particularly in North America, although it has lost some of its popularity over the years.