A "cheeky grin" is a playful and mischievous smile that often suggests a sense of fun or naughtiness. It typically involves a slight upturn of the lips, sometimes accompanied by a twinkle in the eyes, indicating that the person is up to something lighthearted or teasing. This expression can convey confidence and a carefree attitude, making it a common feature in social interactions. People often use a cheeky grin to break the ice or lighten the mood in conversations. It can be seen in various contexts, such as among friends, during playful banter, or even in cartoons where characters display a sense of humor. This grin can create a sense of camaraderie and connection between individuals.