I only recall one of the pediatricians I saw growing up ever say anything before proceeding to the genital/hernia exam. I was aged around 13, and it was the first time I saw this doctor, who was new to the practice. He narrated every aspect of the exam, which I found comforting. After he had finished examining my legs and abdomen while I was laying down, he asked me to stand up, saying something along the lines of: "I'll examine your spine and then proceed to examine your genitals and to check for a hernia" (all very formal and using the correct terminology). After the spine exam, he had me stand in front of him and asked me to lower my underwear ("Go ahead and pull those down now.") -- he was also the only doctor at the practice to put me in charge of pulling my underwear down, and he talked me through the entire examination, including teaching me to do a testicular self exam.
I saw the same doctor a few years later, and he was much less talkative throughout the exam, no longer explaining everything he was doing and instead just getting right to it. Again he had me stand in front of him while he was seated, but this time he pulled down the front of my boxers himself for the genital and hernia checks.
There were two other doctors at the practice, and another one (the one I saw most often) asked me before he started the exam if I was doing my self exams every month. I answered affirmatively, but during the exam while I was laying down on the table, he pulled my underwear down and said to me: "THIS is how you check them." I propped up on my elbows and watched what he was doing (just like the other doctor did but with me laying down).
I think it's interesting that some doctors use cutesy names or slang while they're performing the exam. I suppose it makes their young patients feel more at ease, but it would definitely make me feel more embarrassed if I was in that situation (fun for fetish, not so fun for real life).