"After leaving ÒHowdy DoodyÓ in 1955, Mr. Kean worked for several public relations firms. But music was his passion, and for many years he was a lounge pianist at hotels and clubs in Miami and Detroit. He once said that he was probably best known for coining the word ÒcowabungaÓ (originally spelled with a ÒkÓ) as a greeting for Chief Thunderthud, a character on the show. The word has become part of American vernacular, used by the cartoon character Bart Simpson and by the crime-fighting Teenage Mutant Ninja Turtles.

ÒYou know,Ó Mr. Kean said, ÒI tried to get my phone number listed as Cowabunga Kean, but couldnÕt get them to do it.Ó
"

(From above link)

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So he ended up putting his brand on three or four generations of mindless munchkins in America. Well done, man....