The phrase "what you do where you were" or similar variations like "what you doing, where you at, you got plans?" is known as a viral trend or sound on TikTok, often used in videos that playfully ask questions about someone's actions, location, or plans. It is part of a larger set of popular TikTok phrases that have become memes or challenges, where users respond or lip-sync to the questions about what someone is doing and where they have been. This trend resonates with relatable situations such as family dynamics or casual check-ins with friends. The phrase can be part of a sound or song clip that went viral, used in various TikTok videos to create engaging content or memes. It represents a casual, often humorous inquiry about daily activities or whereabouts, which TikTok users creatively interpret in their videos. In summary, it's a popular TikTok phrase or sound used in video trends that involve asking about someone's actions and location in a lighthearted and relatable way.