The picture shows a flight tracking map with a Turkish Airlines flight (TK1920) going from Istanbul to Kayseri with a funny stop in Ankara, making a sharp turn around Ankara. The joke is that the pilot is having a tea break in Ankara, and the flight is waiting for the pilot to finish his tea before continuing to Kayseri. Here's the joke in Turkish: "TK1920 Ankara'da çay molası vermiş, pilot çayını bitirene kadar Kayseri'ye devam edemeyecekmiş." This humor plays on the stereotype of Turkish people taking their time and enjoying tea breaks, especially pilots!