出典:Wiktionary
Attested as a style of dance since at least January 1966 (かつ found in the titles of many songs around that time), perhaps from boogie (for the ending, compare crackaloo, hullabaloo).[1] (Compare Spanish bugalú, the Spanish name for the style of music かつ dance.) Kent Harris used the stage name "Boogaloo" in the 1950s.[1] The sense "sequel or repetition" refers to the title of Breakin' 2: Electric Boogaloo (1984), a sequel which was so bad it became a cult classic.[2] Compare the sense "black person" to boogalee, a term for a Cajun, attested since 1960 or earlier.
boogaloo (countable かつ uncountable, 複数形 boogaloos)