I was doing physical therapy for back pain, and the therapist noted that I had pelvic floor disfunction. I needed to get approval from an obgyn for them to do an internal exam. I was new in town, so this was my first visit to the obgyn.
I'm there in a paper gown, sitting on the edge of one of those stupid beds, while doctor goes on an endless lecture about how the uterus works, most of which I already know, none of which is relevant to my visit. I interrupted: "I'm going to stop you there. Are we going to be doing an exam, or can we finish this conversation elsewhere, because my back hurts."
He looks surprised. "Oh. Maybe you do have back pain."
Thankfully, my most recent visit with him went well, and his explanations were relevant and welcome.