The term 'COOL GUY' can be broken down into two words, 'DUDE' and 'CAT'. The word 'DUDE' is a slang term used to refer to a man or boy, usually one who is fashionable or attractive. The word 'CAT' is an informal term for a person, usually male, who is considered to be cool, stylish, and confident. Together, these two words form the phrase 'COOL GUY', which is used to describe someone who is fashionable, stylish, and confident.