I have heard the following sentence in the TV series "Marseille":
- Tu en tires, une gueule.
Context: A mobster and a polician running for mayor are walking and talking with each other about the campaign. The mobster steps aside for some seconds to talk on the phone. Meanwhile, the politician reads in his news feed in his cellphone that the press found invoices which supposedly were faked by the politician's party some years ago. He immediately becomes worried and his face shows it. That's when the mobster says the sentence above.
What does "tu en tires" mean here? I have not found a suitable meaning in Word Reference and Larousse dicts, but possibly I may have missed it, as "tirer" has so many meanings. I know the subject is the politician's long face, but I don't understand what exactly is meant.