Circumcision and the So-Called “Psychosexual Nerve”

The circumcision debate remains a hot topic on this blog, and others. Last week, Mr. Fred Rhodes wrote a comment on an older post (Tony Responds: Circumcision’s Encore), and given that the post is a bit buried, I thought I’d go ahead and post his comment in toto here:
I know what that psycho-sexual nerve is. [...]