Takin' Care o' Business. As in the BTO (or, rather, Office Depot) song, but it's an old, old phrase. Also the name of Elvis Presley's band ('68 comeback and later) - that band gave Elvis Costello the nucleus for his first post-Attractions venture (King of America): Jerry Scheff, James Burton (once Ricky Nelson's guitarist), and Ron Tutt. Elvis P's notion (IIRC) was that "TCB" meant giving you your money's worth on stage, but it can also be a synonym for "phoning it in".