Due to some kind of miracle, you managed to arrive just in time. You enter the bar, and…SURPRISE!!!! Your friends are throwing you a surprise party because it’s your birthday! You are not sure how you managed to forget that it is your birthday, AGAIN! You try to push away this thought, as you are delighted at this thoughtful surprise. In an instant, you feel so happy seeing all of your dearest friends congratulating you, so you shout: “These coffees are on me!” Just as you say that, you remember that you don’t know if you have the money to pay for it. You do have some money in your wallet, but will it be enough? Your mood diminishes instantly, and you begin to panic. To escape the storm in your head, you turn to the friend on your right and ask: “I’m not sure what everybody ordered so… what do you think this round of coffee will cost me?” She glances the table and calculates the sum. Good. You have enough money. Disaster avoided.