Play doc exam & frotting

Has anyone had experiences in a "play exam," either as an adult or younger that ended in comparing erections and/or frotting

As a child when we played "doctor" we always ended up comparing erections. Due to my early development I was visibly larger. As an adult, when I first managed to arrange a "play exam", in the initial questioning i raised concerns over size. When the doc got to that part of the exam, he tried reassuring me that i was of average size - I wasn't convinced so he compared his erection with mine by measuring & I was slightly smaller than him. With another doc, we held our erections side-by-side.