I know; it was a dig at Humphrey & Parkes for their awful mangling of the English language ;-)
Quoting:Use juvenal if you want to be sure of not being misunderstood
Have to say I'd disagree there - over here at least, 'Juvenal' is taken as either the Roman poet, or else a bad spelling error if the term 'juvenile' is intended . . . Humphrey and Parkes really ought to have known better!