A hoo is a term used for when wanting to call someone a how but cannot. A Hoo is someone who can be a annoying and a straight up bitch sometimes. A hoo is another world for a bitch asshole cunt hoe all in one word.
Its the term refered to someone who thinks they are real bad ass. It is the sound that would come through their mouth if sound were to be moving through it. Their so bad ass they have that bad ass expression on their face, of "hoo".