Not quite size, but behavioral. Around age 24 I got epididymitis. The urologist looked to be all of 29 or 30, and I got the feeling he enjoyed talking to a patient so close to his own age instead of much older men. Much of what he said was delivered with a fratboy wink. As he was prescribing an antibiotic, he also said, more or less verbatim: "The good news about this is the more you get laid, the faster it goes away. So, hit the ass. Masturbate, ejaculate. But I recommend hitting the ass." I still remember his smile.
In a less funny moment - I had actually been in sharp panicking mode over my symptoms for a few days before my appointment, and then the exam wasn't just the ball squeezer but also my very first rectal exam. I mention that because right after he did it I started greying out, was able to keep things together as long as I was sitting, but at the end when we were done talking and I had to walk out of his office, I fainted and collapsed on the floor. The fratboy banter was gone and he was all business and concerned as he got the nurses to help get me upright and revived. Once he could see I was awake and hadn't had a stroke, he started joking again: "I didn't squeeze you THAT hard!" And again, that smile....
In a less funny moment - I had actually been in sharp panicking mode over my symptoms for a few days before my appointment, and then the exam wasn't just the ball squeezer but also my very first rectal exam. I mention that because right after he did it I started greying out, was able to keep things together as long as I was sitting, but at the end when we were done talking and I had to walk out of his office, I fainted and collapsed on the floor. The fratboy banter was gone and he was all business and concerned as he got the nurses to help get me upright and revived. Once he could see I was awake and hadn't had a stroke, he started joking again: "I didn't squeeze you THAT hard!" And again, that smile....