Another term for "grill", as defined as "one's personal business". George Foreman, former heavyweight champion, is now most known for his revolutionary kitchen grill (The George Foreman Grill) that cuts the fat out of foods and cooks quicker than a conventional over or stove.
Girl 1: Ooooh that guy is all over Sandra!!
Girl 2: Damn, that nigga's all up in her George Foreman!!