That wise philosopher, William J. Boardman, tells me that those first threatening aggressive noises [man’s first swearing] were full of G’s and K’s and P’s and H’s and harsh sibilants. Such noises had the effect of a blow; they needed no dictionary to prove they were primed with all the bad magic of an evil wish. …

If I am to take seriously Mr. Boardman’s assertion that only a certain five letters have objurgatory value, then why not make words out of them and consider them as much our own private property as ‘jobjam’ belonged to Booth Tarkington, or ‘Malaga!’ to Dumas? Try ‘Bodkogh!’ for instance, or ‘Hagbadek!’ ‘Khigbod!’ ‘Dakadigbeg!’ or ‘Godbekho!’

— Burges Johnson, The Lost Art of Profanity, 1948