Derivate from the Word "bumm!", the
german version of "boom!" which (the german version of course) is widely used in the translation of comics by Carl Barks.
The derivate "bum!" is to be found in abundance in comics by Katz&Goldt, two cartoon superstars from
Germany. Using the word in german comics provides a intellectual tongue-in-cheek connotation to all those notorious Donald
Duck books.