The term 'SUPERB, IN SLANG' can be expressed in two different ways. The first is 'FAB', which is an acronym for 'FANTASTIC'. This is a slang term used to describe something that is excellent or outstanding. The second is 'ACES', which stands for 'Awesome Cool Excellent Superb'. This is another slang term used to express something that is of the highest quality. Both terms are used to express admiration and appreciation for something that is truly remarkable.