You are my patient and I am your naughty nurse. I have been drinking a lot of coffee and I am not allowed to leave you by yourself. I am holding my pee for a bit before I have the idea to convince you that if you drink my pee then you will be cured of your illness. You do not believe me but I persist. Eventually you agree. I pull my pants down and pee in my coffee cup. I show it to you and encourage you to drink it. You are going to be cured! I am so relieved because I was holding it for hours.