I can't imagine how it must have been for him going through puberty with a monster like that, (Assuming the image wasn't "Photo Shopped!") In his case I am certain that "Spontaneous Erections" take on an entirely different dimension when you are so blessed.
Surely, it did not let a small thing like a belt interfere with its expansion upward and onto open air, like a well-meaning periscope. This is one factor that one has to take into "full consideration" if they are out of underwear and thinking about going "commando" out in public. I am sure he was the envy of all the boys in gym!