The phrase "doest the technicolor yawn" is a humorous way to describe vomiting. The spelling of "doest," while archaic, is deliberately chosen to convey a jocular tone. It is pronounced /dʌst/ with a short "u" sound and a "st" ending. "Technicolor" refers to the vivid and varied colors associated with the Technicolor film process. "Yawn" is spelled phonetically, with the "aw" sound represented by /ɔː/. Altogether, this phrase is a playful and memorable way to describe an unpleasant bodily function.