Bulería comes from Spanish pop star David Bisbal, who rose to fame on Operación Triunfo in 2001 before releasing Bulería as the title track of his 2004 album. Named after a traditional flamenco rhythm, the song blends pop with Andalusian phrasing and became a major hit across Spain and Latin America. Online, the elongated chorus was clipped and shared as a reaction sound, with the stretched final syllable making it instantly recognisable in memes, edits and soundboards long after its chart run.