My pediatrician always seemed to pay extra attention to my genitals. This was especially true after I hit puberty. As the first part of a genital exam, he would examine my testicles while I was lying down. He would then run his fingers through my pubic hair. This was followed by an exam of my penis from base to tip. He would finish this portion of the exam by squeezing open my urethra and looking in.
Then I would stand up with my legs slightly apart and my hands behind my head and he would check my testicles and penis again, followed by a "turn your head and cough" test.
After the digital rectal part of the program, he would squeeze the tip of my penis again. I didn't understand what he was looking for at the time, but now I realize he was checking my constant need to ooze seminal fluid. He never took a sample though.