bbbcn
bbbcn is short for big black booty cheeks nigga. Those lyrics are in a song written by a Dutch guy. The song is on youtube, the name is Huts - Darker Then The Sky, (ft. Opa Burno, Lebi, Hubo, Dutsi), wwrote by HUTS meneer.
big black booty cheeks, nigga. *bbbcn* said by racist kids and the song is sung by Dutch children.