"That One" typically refers to a specific individual or item that stands out among others in a particular context. It is often used in casual conversation to identify something unique or noteworthy, whether it be a person, an object, or an experience. The phrase can evoke a sense of familiarity or shared understanding among those involved in the discussion. In various contexts, "That One" can also signify a memorable moment or a significant choice. For example, in movies, it might refer to a standout character or scene, while in sports, it could denote a pivotal play or athlete. The phrase captures the essence of distinction and recognition.