The phrase "doest the technicolor yawn" is an informal way to describe the act of vomiting or throwing up. There are many synonyms for this expression, including "puke," "barf," "hurl," "vomit," "regurgitate," "emetic," "retch," and "spew." Each of these words conveys the same meaning of expulsion of stomach contents, but may differ in tone or usage. Some of these synonyms may be more appropriate for medical or technical contexts, while others are more commonly used in casual conversation. Regardless of the word chosen, the act of "doing the technicolor yawn" is an unpleasant and uncomfortable experience.