A couple of times.
I'm getting older, so I decided to try out some trimix. The doctor gave me a trial dose, then told me to stay standing up and pace around the exam room for a while, until he returned. The dose was about right, and I was soon hard. After a few more minutes, there is a knock on the door, the doctor walks back in, and I turn around to face him. He blurts out "Wow!"
The second time, I had developed a swelling, retained fluid, in the upper thigh and groin area. It turned out to be just a lymph node that had gotten blocked up for no identifiable cause, but my doctor was concerned that it might be a blood clot, so she checked me into the hospital, and made arrangements for a couple of specialists to examine me. One other characteristic of the fluid retention is that it caused by penis to be erect size, even though it was completely soft.
The first specialist to see me was the hematologist. He was convinced it was a blood clot, so he immediately sent me down for an ultrasound of the penis. The ultrasound tech was obviously gay (as am I). He whispered in my ear "whatever it is, it's not a blood clot," and seemed to be thoroughly enjoying himself. The doctor shows up and is not pleased with the negative results. He begins questioning me.
"Sir, is you penis normally like that?" "Well, yes, when it's erect."
"No, Sir, is your penis normally that...LARGE?" "Yes, as I said, when it's erect."
The poor ultrasound tech is standing behind the doctor, biting his lip, and using about all of his energy to keep from laughing.
"But Sir, is you penis normally that...THICK?" "Yes!!! I've got a big dick!"
Still not taking no for an answer, he orders an MRI of the penis (I so wish had those images...).
I get back to my room, and the second doctor, a urologist, shows up tat evening. "So, You were in San Francisco?" he says. I answer that I was. Then he leans close to my ear and whispers "I did my residency there. I've seen everything. Don't worry, you'll be fine, you just need some bed-rest, and keep it elevated."
He was right. But for the remainder of my stay (a couple of days), I had many visitors, all of which said they were in some way affiliated with my primary doctor, and were sent to check on me (and my penis). Of course, they all had their ID badge covered up. The only one I recognized as having any affiliation with my doctor, and showed me her ID, was the little old lady with a walker! (My doctor shares office space with a compassionate care cancer practice, and they do have such people on their staff.)