In the 1965 novel For Kicks by Dick Francis, one character advises another that, to go undercover as a disreputable stable lad, "Then, if I might suggest it, it would be a good idea for you to grow a couple of sideburns. It's surprising what a lot of distrust can be caused by an inch of extra hair in front of the ears!" Francis, Dick (). For Kicks. New York: Armchair Detective Library. p. 19. ISBN0-922890-59-5.