opb:
...the author has managed to evoke the yearning of a teenaged boy for the unattainable...
But I read even more than that. In this boy's life, this is an incident of
sexual discovery. He certainly went into the nurse's office with no thought of anything fantasy-inducing happening. Yet it did. How does a boy process that? I was a boy once so I can tell you! Usually it happens in bed...at night, and involves a messy discharge of a certain bodily fluid.