The term 'MOB HEAD' is a slang term for a CAPO, which is an Italian word meaning 'HEAD' or 'BOSS'. A CAPO is a high-ranking member of a Mafia organization who is responsible for supervising and controlling the activities of the lower-ranking members. The CAPO is usually appointed by the BOSS of the organization and is responsible for carrying out orders from the BOSS. The CAPO is also responsible for ensuring that the organization's activities are conducted in accordance with the rules and regulations set by the BOSS.