This is a new way to take a shit when you're in a hurry in the subway 🙂 You just use that nice photobooth to do it. No one will notice that you're taking a shit in it ! Don't pay attention to the guy's comments, he is French so it's highly possible that you'll understand nothing. I love the way the girl doing it, like if this half curtain was a real door. Did you see the only problem in this scene ? Yes, she can't flush, too bad, except that, it was the perfect way to do it.