C.H.B. stands for COUNCIL HOUSE BARRISTER, and is someone who is believed to have lived in a council house(NOT), who failed their exams, and made friends with crackheads, before they slept their way into Oxford/Cambridge, and then to the BAR.
Oxford Neighbour1 talking to neighbour2: "Here comes that C.H.B with that decent man."
Neighbour 2: "Well at least there's no camels."
Casey Holds Unlimited Booze. Casey being any girl who can party as well as the wildest guy you know but looks amazingly beautiful and graceful while doing it.