I think you are right as regards BJ and AC Jumper... though I reckon some people can and do - principally for effect granted!
The descent into the profane...well yes in some ways. Certainly it is all too common to hear these words used in a most mindless fashion that does nothing to enhance one's day! But equally, they do still have a social, intellectual and emotional function that, whilst lost on the great unwashed, provides a fascinating insight into the social, historical and etymological side of life... sorry, am off on one again.
Nowt wrong with being in a minority.