adjective - a term used to describe a song that is completely horrible by being repetitive, simplistic and utterly cheesy in its lyrical content. A song that is a booka will repeat its chorus endlessly and its chorus is at most four lines.
The term's origin is Denver, CO and was inspired by the song "#1 Stunna" by Big Tymers. Someone misheard the line "You know I keep a ";blucka-blucka"; and it morphed to its present form.
Examples of songs that are a 'booka' include "My Humps" by the Black Eyed Peas, "My Hood" by Young Jeezy or "Jump" by the regrettable kiddy act Kriss Kross.