To civilized adults, a boner is an embarrassing error, or a mistake with
humorous consequences. In schoolyard slang, it is quite a different
matter. (Or, perhaps not.)
Way back in the 1970s when I was an undergraduate student, I used to
purchase quite a few "phonograph records" (an archaic predecessor of the
CD). I regularly received catalogs from an outlet called Rose Records
of Chicago. One such flyer advertised a recording featuring Gustav
Leonhardt playing English vaginal music.
After delightedly showing it to all of my friends, I hung onto it for
several years. It was always good for a laugh at a party. Damn, wish I
still had it.