Chicago rappers have this trend where they choose some arbitrary number of bars to rap—and make that a song. Lil Durk did 52. Lil Mouse did 100. Chief Keef did 12. Katie Got Bandz chose 39. The first lady of drill a.k.a. Drillary Clinton now calls herself the "B.O.B."—which stands for "Big Old Bitch"—seemingly to complement King Louie's "B.O.N." It's a hard-hitting Block On Da Trakk (frequent Katie collaborator) production and shows a new development in Katie's style, who says on this very song that she got famous off only 12 bars. Bow bow.