P. Holland (trans.) Suetonius’s Historie of Twelve Caesars (1899) II 220: [He had] a countenance as if he streined hard for a stoole. Whereupon one of these plaisants came out with a pretie conceit. For when Vespasian seemed to request the fellow for to breake a jest upon him also, as well as upon others, ‘that I will,’ quoth he, ‘If you had done your businesse once upon the seege’.at do one’s business (v.) under business, n.