"T'es où ?" is a French phrase that translates to "Where are you?" in English. It is commonly used in casual conversations to inquire about someone's location. The phrase can be used in various contexts, such as checking on a friend or coordinating plans. This expression is often used in text messages or phone calls, reflecting the informal nature of communication among friends and family. It highlights the importance of location in social interactions, especially in urban settings like Paris or during events like concerts and meetups.