Once I read in this group a story about how a guy was standing at the box office in a store and he lacked the little things to buy and then he noticed that the cashier, whether the mark of the right hand on the chest, or any other IP accessory. And he did not get confused and said two promising words: "VALAR MORGULIS." The treasurer answered "VALAR DOHAERIS" and forgave him the missing amount. I got into the same situation. Except for a few details: it was after 23:00 and I was buying alcohol, and there was an IP T-shirt on the cashier without attachment to the big house. She refused to sell me and I decided to test the fate, but instead of two loving words, I said (and I reminded me wanted to drink): "North remembers"! In response to what I received: "Best wishes from the Lannister"! As you can see, I did not drink that night!