if your saving your money on something else but wanting to buy a drink, this is the secret that's quite fit for you! sometimes, you will get a bonus drink ex. you bought lemonade and then you get a bonus lemonade! it works sometimes if you buy 2 of the same at the same time. so you get 3 drinks! it also works even when you buy 1 but it usually works when you buy 2 though... it may not work but remember keep trying!