RE: "these words are not real English and he has made them up."

It is my personal (perhaps heretical) belief that dictionaries are ultimately descriptive rather than prescriptive. That is, the language comes from the people, and if the people want to use the word "skanky" to mean unclean and promiscuous (which is how my peers and I use the word), and if a reasonable number of people within earshot understand the word, then the word is "real." Either a word catches on or it doesn't. If it becomes widely used on it gains "legitimacy" and ultimately enters the dictionary. [end of rant] :)