a licky boom boom down
A phrase in white pseudoreggae rapper Snow's #1 hit song, Informer. It has no meaning whatsoever, but is known for being the only coherent line in the song. 
Snow: Informer/You know say daddy me snow me-a (gonna) blame/A licky boom boom down

Guy #1 listening: What the hell did he just say?
Guy #2 listening: I don't know. All I heard was a licky boom boom down.