Dictionary.com says...
NOMB None Of My Business
( roaneah the infamous exploding fruitcake, Sat 2 Oct 2004, 21:04, archived)

That's the best I could do too.
Good old dictionary.com
(MooCow_Byter sign the SSG card: www.b3ta.com/board/9512841, Sat 2 Oct 2004, 21:05, archived)