The song you are thinking of could be basically any song known to man. Way to be descriptive, genious. genius*
There isn't a meaning of Bum bum be-dum bum bum be-dum bum, it's just lyrics from a song called Disturbia by Rihanna
different answer : mine doeschinchillas answer : the bum bum bumpty bum bum song
it kills it and makes it fatter
well, after a series of scientific studies and research, i have concluded that "bum bum" means two (2) glutious maximuses, 2 bums, 2 butts, 2 asses, 2 rear ends, 2 derreires etc.
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