What is the author's style in The Colour of Magic by Terry Pratchett?

The language of the novel is informal and quite humorous. The author has fun playing with words and names, as evidenced by the phonetic spellings of insurance, policies, and economics. Because the novel takes place in another universe, the characters have to define unknown words by using their personal observations. Rincewind makes up his own definitions for the words Twoflower uses to describe the landscape near Chirm. Based on his experiences with Twoflower, Rincewind decides that the word "tourist" means "idiot."