Ghetto fabulous way of saying Business Phone. Typically reserved for those people who have a prepaid cell phone that swear they are "running a business" with it. Typically the kinds of businesses being run are probably illegal in most areas of society. One will hear this word rather frequently when this person's biddness foam (Business Phone) has been disconnected due to neglecting to pay the bill.... on time.... Which is required for any prepaid service.
"Yo dawg, dis mah biddness foam yo! You gots to turn dis back cause I'm loosing biddness!"