Was the TERM ABU just made up by Man Utd fans....?

i'm man united fan and believe me when i say this, i don't like Fergie. yeah his a great manager but the dark side of him probably why. back in my country other fan always talk ill bout man united but i just simply ignore them. well i'm not arrogant but mostly i joke about it. anyway, what is ABU anyway? i really don't read english papers