Weston Cage, son of Hollywood movie star Nicolas Cage, wants to fight in the UFC to "prove to people he's not mentally unstable." To that end, he's called out former UFC heavyweight attraction Kimbo Slice, which led the former EliteXC star's manager, Jared Shaw, to tell TMZ that "mental stability would have had [Weston] think twice about his wishes to fight a street certified, cage tested, and boxing ring ready Kimbo Slice." Slice, real name Kevin Ferguson, makes his debut in the "sweet science" against the 0-1 James Wade on Aug. 13 at the Buffalo Run Casino in Miami, Oklahoma.