In Greek culture, "koukla" is commonly used as a term of endearment and does not necessarily imply that the person being addressed is literally a doll. It can be used to express fondness, admiration, or affection towards a child, a partner, or a close friend.
The phrase "koukla mou" can be used in different contexts and situations to convey various emotions. It can be used as a playful and affectionate way of addressing someone, to show appreciation or admiration, or to provide comfort and support.