New one:
You get pissed off at needing to go to a doctor because you know exactly what's wrong with you, what it's causing, why it's there, the symptoms, the root cause and the result of all of it. And you know the doctor is going to go through the whole song and dance when you go for the visit, despite what it is you tell him, then get stuck on some minor detail or side-effect that has nothing to do with the actual cause of the problem. Yet you need a doctor to put it in medical lingo to write you a prescription.