ya'll hear that boom-whicky-boom-boom in that whip?  he rolled by wit' da' boom-whicky-boom boom rattlin' his license plate
a loud car audio stereo
"ya'll hear that boom-whicky-boom-boom in that whip?  he rolled by wit' da' boom-whicky-boom boom rattlin' his license plate" What is the definition of "boom-whicky-boom-boom"?